GSAMCTIR252Dual RF and IR Transmitter

DE2411U 1 MCT/IR-252 WP S Resettable Dual RF & IR Waterproof Transmitter User Guide 1. INTRODUCTION The MCT/IR-252 WP S is a miniature, water-proof, resettable, microprocessor controlled, personal transmitter designed for use in the SpiderAlert signaling network. The transmitter has two buttons, used for reporting three different events: Panic (large button), Assist (small button) User Defined (by clicking on the two buttons simultaneously). The alarm events are supposed to be acknowledged and reset by the person who responds to the alarm message by holding a magnet close to the pendant. In the case that an event is not acknowledged, a No Response message is sent. In addition to the above-mentioned events, the transmitter also sends low-battery, tracking and supervision messages (when defined in DIP switch). The transmitter transmits coded UHF signals and pulsed infrared signals simultaneously, thereby allowing the target receiver to accurately determine the specific point at which transmission took place in multi-storey buildings. Besides the regular alert mode, in which an alert message is transmitted only once, the transmitter can be set to two additional modes – MESSAGE CYCLE and REPEATED MESSAGE CYCLING. In the message cycle mode, panic, and assist messages are automatically repeated three times, and a no-response message follows if the message has not been acknowledged. In the cycle repetition mode, a sequence of three alarm messages followed by a no-response message (one cycle) is repeated 5 times, unless the message is acknowledged sooner. The time interval between these messages is determined by the DIP switches (para. 3.1). When a Panic message is transmitted after an Assist message has been initiated, the repeated messages will be Panic messages instead of Assist messages. When holding an external magnet close to the unit, either from underneath or on top, near where the pushbuttons are positioned (fig. 1) the repetitive message transmissions will stop and an acknowledge message will be sent. Fig. 1 – Resetting Transmitter Once the button is depressed, the LED lights and after approximately one second the message is transmitted. It is important not to cover the LED during the period of time after pressing the button. When keyed into transmission, the transmitter transmits its unique factory LARGE BUTTON SMALL BUTTON BATTERY COVER HOLES FOR CHAIN Figure 2 – MCT/IR-252 WP S programmed, randomly selected 24-bit digital ID code. There are over 16 million code possibilities, so for all practical purposes no two transmitters will have the same ID code. The dual-technology alert transmissions made by the MCT/IR-252 WP S are directed at SpiderAlert receivers. These receivers are strategically located all over the surveillance area, to pick up alert transmissions and report the ID code of the transmitter whose signal was picked up. SpiderAlert system SLC-5UPS Controller PC SR-520 RF+IR receiver SpiderBus MCT/IR-252 WP S Figure 3 – Application Configuration Reporting is accomplished via a two-wire bus routed to the SpiderAlert Local Control Unit SLC-5, that collects and transfers all data to the SpiderAlert main computer automatically displaying the holder’s name and exact location. All units are supplied with a chain, to be worn around the neck as a pendant transmitter. 2. SPECIFICATIONS Frequency (MHz): 315 or 868. IR Transmission Range: 14 m (46 ft) max. with unobstructed line of sight (para. 5.2). RF Transmission Range: 30-40m indoors. Transmitter ID: 24-bit digital word, over 16 million combinations, pulse width modulation Message length: 36 bit. Transmission Duration: Limited by timer to approx. 2 seconds. Power Supply: 3V lithium battery Panasonic CR2450 or equivalent. Current Consumption: 3μA (standby), 10 mA (transmission). Battery Life: 3 years for typical use. 1 year when using automatic tracking. Battery Capacity: 500mAh Low Battery Threshold: 2.5 VDC Operating Temperature: 0° to 50°C (32° to 122°F). Dimensions: 39x60x18mm (1-7/16x2-3/8x5/8 In.). Weight: 40 g (1.4 oz). Color: Violet Transparent. Compliance with Standards: FCC ID: GSAWTIR201, CANADA: 1467 102 270 Patents: U.S. patent 5,661,471 3. TRANSMITTER MESSAGES 3.1 Internal DIP Switch Functions The internal DIP switches functions and their default positions (set by the manufacturer) are detailed in table 1. To change DIP switch settings, remove the battery as detailed in para. 4.1 and set the required DIP switch positions. Position the battery in place and secure the battery cover. Table 1 - Internal DIP Switch Functions SW # Description Default 1 Supervision ON/OFF (*) OFF 2 Cycling ON/OFF (**) ON 3 Repeat Cycling ON/OFF (***) ON 4 Retransmission Periods (****) OFF 5 Retransmission Periods (****) OFF 6 Automatic Tracking ON/OFF (*****) OFF *Supervision type ON - the supervision messages are transmitted every 60 minutes. OFF– No supervision messages are transmitted. **Message Cycling ON – 3 repetitive PANIC messages are transmitted and then a NO- RESPONSE message is transmitted. OFF – a single PANIC message is transmitted. ***Repeat Cycling ON – The Message Cycle is repeated 5 times. OFF – The cycle is not repeated. **** Retransmission Periods (Switches 4 & 5): This is the period of time between transmission of repeated messages (see DIP switch 2 and 3) and between the tracking messages (see DIP switch 6) when these options are enabled. 2 DE2411U SW 4 SW 5 Period OFF OFF 30 sec. ON OFF 1 min. OFF ON 2 min. ON ON 4 min. *****Automatic Tracking ON – The automatic tracking feature is enabled. OFF – The automatic tracking feature is disabled. 3.2 Events Messages In addition to the transmitter's 24-bit ID, a transmission always includes an alert code. A low-battery code will be automatically added to the transmitted data if the battery voltage is below 2.5 VDC. An LED lights steadily during every transmission for 1 sec. No. Event Basic Address PANIC Basic Address +1 ASSIST Basic Address +2 USER Basic Address +3 ACKNOWLEDGE B…

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DE2411U 1 MCT/IR-252 WP S Resettable Dual RF & IR Waterproof Transmitter User Guide 1. INTRODUCTION The MCT/IR-252 WP S is a miniature, water-proof, resettable, microprocessor controlled, personal transmitter designed for use in the SpiderAlert signaling network. The transmitter is used ONLY during emergencies involving security and safety of life, such that when an alarm is activated, transmissions continue during the pendency of this alarm condition. Application examples include elderly hospital patients and emergency nurse calls. The transmitter has two buttons, used for reporting three different emergency events: PANIC1 (large button), PANIC2 (small button) PANIC3 (by clicking on the two buttons simultaneously). The alarm events are supposed to be acknowledged and reset by the person who responds to the alarm message by holding a magnet close to the pendant. In the case that an event is not acknowledged, a No Response message is sent. In addition to the above-mentioned events, the transmitter also sends low-battery and supervision messages (when defined in DIP switch). The transmitter transmits coded UHF signals and pulsed infrared signals simultaneously, thereby allowing the target receiver to accurately determine the specific point at which transmission took place in multi-storey buildings. Besides the regular alert mode, in which an alert message is transmitted only once, the transmitter can be set to two additional modes – MESSAGE CYCLE and REPEATED MESSAGE CYCLING. In the message cycle mode, PANIC1, and PANIC2 messages are automatically repeated three times (initially 4 times), and a no-response message follows if the message has not been acknowledged. In the cycle repetition mode, a sequence of three alarm messages followed by a no-response message (one cycle) is repeated 5 times, unless the message is acknowledged sooner. The time interval between these messages is determined by the DIP switches (para. 3.1). When a PANIC1 message is transmitted after an PANIC2 message has been initiated, the repeated messages will be PANIC1 messages instead of PANIC2 messages. When holding an external magnet close to the unit pushbuttons, either from underneath or on top, (fig. 1), the repetitive message transmissions stop and an acknowledge message is sent. Fig. 1 – Resetting Transmitter Once the button is depressed, the LED lights and after approximately one second the message is transmitted. It is important not to cover the LED during the period of time after pressing the button. When keyed into transmission, the transmitter transmits its unique factory LARGE BUTTON SMALL BUTTON BATTERY COVER HOLES FOR CHAIN Figure 2 – MCT/IR-252 WP S programmed, randomly selected 24-bit digital ID code. There are over 16 million code possibilities, so for all practical purposes no two transmitters will have the same ID code. The dual-technology alert transmissions made by the MCT/IR-252 WP S are directed at SpiderAlert receivers. These receivers are strategically located all over the surveillance area, to pick up alert transmissions and report the ID code of the transmitter whose signal was picked up. SpiderAlert system SLC-5UPS Controller PC SR-520 RF+IR receiver SpiderBus MCT/IR-252 WP S Figure 3 – Application Configuration Reporting is accomplished via a two-wire bus routed to the SpiderAlert Local Control Unit SLC-5, that collects and transfers all data to the SpiderAlert main computer automatically displaying the holder’s name and exact location. All units are supplied with a chain, to be worn around the neck as a pendant transmitter. 2. SPECIFICATIONS Frequency (MHz): 315 or 868. IR Transmission Range: 14 m (46 ft) max. with unobstructed line of sight (para. 5.2). RF Transmission Range: 30-40m indoors. Transmitter ID: 24-bit digital word, over 16 million combinations, pulse width modulation Message length: 36 bit. Transmission Duration: Limited by timer to approx. 2 seconds. Power Supply: 3V lithium battery Panasonic CR2450 or equivalent. Current Consumption: 3μA (standby), 10 mA (transmission). Battery Life: 3 years for typical use. Battery Capacity: 500mAh Low Battery Threshold: 2.5 VDC Operating Temperature: 0° to 50°C (32° to 122°F). Dimensions: 39x60x18mm (1-7/16x2-3/8x5/8 In.). Weight: 40 g (1.4 oz). Color: Violet Transparent. Compliance with Standards: FCC ID: GSAWTIR201, CANADA: 1467 102 270 Patents: U.S. patent 5,661,471 3. TRANSMITTER MESSAGES 3.1 Internal DIP Switch Functions The internal DIP switches functions and their default positions (set by the manufacturer) are detailed in table 1. To change DIP switch settings, remove the battery as detailed in para. 4.1 and set the required DIP switch positions. Position the battery in place and secure the battery cover. Table 1 - Internal DIP Switch Functions SW # Description Default 1 Supervision ON/OFF (*) OFF 2 Cycling ON/OFF (**) ON 3 Repeat Cycling ON/OFF (***) ON 4 Retransmission Periods (****) OFF 5 Retransmission Periods (****) OFF *Supervision type ON - the supervision messages are transmitted every 60 minutes. OFF– No supervision messages are transmitted. **Message Cycling ON – Initially 4 repetitive PANIC1 messages are transmitted followed by a NO-RESPONSE message, after which 3 repetitive PANIC1 messages are transmitted followed by a NO-RESPONSE message. OFF – a single PANIC1 message is transmitted. 2 DE2411U ***Repeat Cycling ON – The Message Cycle is repeated 5 times. OFF – The cycle is not repeated. **** Retransmission Periods (Switches 4 & 5): This is the period of time between transmission of repeated messages (see DIP switch 2 and 3) when this option is enabled. SW 4 SW 5 Period OFF OFF 30 sec. ON OFF 1 min. OFF ON 2 min. ON ON 4 min. SW 6,SW 7 and SW 8 NOT USED 3.2 Events Messages In addition to the transmitter's 24-bit ID, a transmission always includes an alert code. A low-battery code will be automatically added to the transmitted data if the battery voltage is below 2.5 VDC. An LED lights steadily during every transmission …

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Saved: 12 Jan, 051/12/2005 3:22 PM Printed: 12 Jan, 05 - 3:22 PM MCTIR-252 WPS Block diagram for FCC ELPAS Electro-optic Systems Ltd. 30 Habarzel St., Tel-Aviv 69710, ISRAEL Tel: 972 3 7681400 Fax: 972 3 7681415 Site: www.elpas.com Title MCT/IR-252 WPS Block Diagram Size A4 Dwg. No. 5-2411-1 Rev. 0 Scale Sheet:1 Of:1 Name Date Signature Design/ Drawn Gabi C hecked Nissim A 12.1.05 Engineering . Production QA . Approved Nissim A. 12.1.05 uC RF Tx IR Tx Hall Effect sensor Reset 3 V RF Antenna Led SW 1-8 3V Low Voltage Detector 2.7V+/-2% 3 V 3 V 4 MHZ 3 V 3 V Button Alar m

January 17, 2005 American TCB 6731 Whittier Ave Suite C110 McLean, VA 22101 USA Subject: Request for confidentiality for the resettable personal transmitter, model MCT/IR-252, FCC ID:GSAMCTIR252 Dear Gentlemen, We apply to you with request to withhold Visonic Ltd. trade secrets in Application for Certification for FCC ID:GSAMCTIR252. These trade secrets can be found in the schematic diagram, file Schematic_15910 (1 page of this Application). Many thanks in advance. Yaacov Kotlicki Directing Manager Head Office 30 Habarzel Street Tel Aviv 69710 Israel Postal Address P.O.B. 22020 Tel Aviv 61220 Israel Tel 972 3 6456789 Fax 972 3 6456788

HERM O N LA BO RA TO RIES February 23, 2005 American TCB 6731 Whittier Ave Suite C110 McLean, VA 22101 Attn: Mr. T. Johnson, Examining Engineer RE: your e-mail dated February 3, 2005; Visonic Ltd. FCC ID:GSAMCTIR252, ATCB002117 Dear Mr. Johnson, Please find below the answers to your questions. 1) The revised test report VISRAD_FCC.15910_rev1 with measured supervision messages was uploaded on February 23, 2005 via “Test Report” folder. 2) The Tracking messages are switch 6 dependent and for FCC application the switch must stay OFF (Default) to disable this feature. The revised file User_Manual_15910_rev1 was uploaded on February 23, 2005 via “User Manuals” folder. 3) The “Message Cycling” and “Repeat Cycling” are switches 2 and 3 dependent and for FCC application the switches must stay OFF as shown in Note, page 2 of the revised file User_Manual_15910_rev1. 4) The revised test report VISRAD_FCC.15910_rev1 with requested test data was uploaded on February 23, 2005 via “Test Report” folder. 5) Please see item 3. 6) The revised test report VISRAD_FCC.15910_rev1 with the limit for bandwidth (Table 7.3.2) was uploaded. 7) The statement is located on the label, please check page 2 of “Label_location_15910”. Thank you. Marina Cherniavsky, certification engineer Hermon Laboratories

HERM O N LA BO RA TO RIES March 17, 2005 American TCB 6731 Whittier Ave Suite C110 McLean, VA 22101 Attn: Mr. T. Johnson, Examining Engineer RE: your e-mail dated March 15, 2005; Visonic Ltd. FCC ID:GSAMCTIR252, ATCB002117 Dear Mr. Johnson, Please find below the answers to your questions. 1) The MCTIR252 is a part of an emergency/security alarm system. Its ONLY purpose is personal security, and activation of the transmitter is for emergency security reasons. In order to explain it better to people/user who are not used to secularity systems, Visonic Ltd. use terms such as assist and user defined. For example, it is obvious that the assist function is used FOR THE SOLE PURPOSE OF ALARM/SECURITY and not for any other purpose. All the signals, whatever name they have are used for emergency/security/alarm/safety purposes ONLY. We hope that this answer is satisfactory. 2) The test report Table 7.2.4 was corrected (transmission train duration is 377 ms). It does not affect the duty cycle worst case average factor calculation. Thank you. Marina Cherniavsky, certification engineer Hermon Laboratories

HERM O N LA BO RA TO RIES April 5, 2005 American TCB 6731 Whittier Ave Suite C110 McLean, VA 22101 Attn: Mr. T. Johnson, Examining Engineer RE: your e-mail dated March 24, 2005; Visonic Ltd. FCC ID:GSAMCTIR252, ATCB002117 Dear Mr. Johnson, Please find below the answer to your questions. 1) Visonic Ltd. confirms that the transmitter will be marketed only for use in safety of life circumstances. The following statement was included in revised User Guide: “The transmitter is used ONLY during emergencies involving security and safety of life, such that when an alarm is activated, transmissions continue during the pendency of this alarm condition”. The revised User Manual, file “User_Manual_15910_rev3” was uploaded on April 5, 2005. Many thanks for your assistance and patience. Marina Cherniavsky, certification engineer Hermon Laboratories

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 February 3, 2005 RE: Visonic Ltd. FCC ID: GSAMCTIIR252 After a review of the submitted information, I have a few comments on the above referenced Application. 1) The users manual mentions supervision messages that can be transmitted every 60 minutes. Please measure and show compliance to the 2 seconds allowed by 15.231 (a)(3). 2) The users manual mentions tracking features. Transmissions under this mode are not adequately explained. This mode implies repeated transmissions which are not allowed under 15.231(a)(3). Please provide sufficient information to explain this mode and measure if necessary. 3) Please provide adequate information to explain the Message cycle and repeated message cycle modes. Note that these functions for the assist mode are not allowed under 15.231(a)(3/4). Please provide adequate information and tests to show compliance to these sections as necessary. 4) Plots in section 7.1.1 should be shown for all necessary modes. 5) Does “message cycling”, “repeat cycling”, “tracking” or “supervision” packets have different lengths /sizes/bits which may affect the worse case duty cycle used for average calculations. Please explain. 6) The limit for bandwidth appears off. Please recheck. 7) The 2 part FCC statement does not appear on the label, likely due to the size of the device. This statement therefore needs to be placed in the manual. Timothy R. Johnson Examining Engineer mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 February 23, 2005 RE: Visonic Ltd. FCC ID: GSAMCTIIR252 After a review of the submitted information, I have a few comments on the above referenced Application. 1) Simply explaining to the user to keep SW 2, 3, and 6 off in the manual is not sufficient for the FCC. Please refer to 15.15 of the rules. Basically there must be some way that the user can not enable these features. Either the switches for these numbers do not exist, the connection to these switches do not exist, firmware/software is set such that the switches do not function, etc. Please explain how the device will be compliant to 15.15 given these features or alternatively provide a response to the previous questions 2, 3, 4, and 5 as appropriate that shows compliance to 15.231. Timothy R. Johnson Examining Engineer mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 March 15, 2005 RE: Visonic Ltd. FCC ID: GSAMCTIIR252 After a review of the submitted information, I have a few comments on the above referenced Application. 1) Although Message cycle and repeat cycling (switches 2 & 3, plus 4 & 5) may be acceptable during emergencies of life, the assist mode and user defined modes should not allow for message cycle and repeated message cycle modes. These modes are not considered acceptable under 15.231(a)(3/4). Please provide adequate information and tests to show compliance to these sections as necessary. 2) Supervisor TX appears to occur over 377 ms, while normal TX occur over 278 ms. Please provide information to support if this affects the worse case duty cycle used for average calculations. Timothy R. Johnson Examining Engineer mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 March 15, 2005 RE: Visonic Ltd. FCC ID: GSAMCTIIR252 After a review of the submitted information, I have a few comments on the above referenced Application. 1) Even if the assist may be used for security and safety applications, if it is not considered an immediate emergency, then transmissions beyond 5 seconds would not be allowed. According to FCC rules, only emergency conditions are allowed to exceed the 5 second rule. To cite an example that defines the FCC’s concern, please reference the following: A manufacturer developed various health and safety gas alarm detectors for home use. One of these detected Radon while another was Carbon Monoxide. The Carbon Monoxide version was allowed to TX for the pendency of the alarm since this gas can cause death and was therefore considered an emergency. The Radon detector was not allowed to TX beyond 5 seconds, even though Radon is considered a Health hazard. This is based upon the fact that it is not an emergency condition (even though Radon affects health). Given our training, past experience and example cited above I am not convinced that the assist and user defined features meet with emergency conditions allowable under 15.231. To proceed forth considering these modes acceptable for > 5 seconds of TX will require a confirmation from the FCC. Does your client have anything showing acceptability of these from the FCC? If not, we will need to consult with the FCC. Please let us know how you wish to proceed. Please note that the FCC typically takes 3-4 business days to respond to our inquiries. Timothy R. Johnson Examining Engineer mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

FCC ID:GSAMCTIR252 Date: January 2005 Page 1 of 3 EXTERNAL PHOTOGRAPHS This document contains 2 photographs FCC ID:GSAMCTIR252 Date: January 2005 Page 2 of 3 Photograph No.1 Resettable personal transmitter, model MCT/IR-252 General view FCC ID:GSAMCTIR252 Date: January 2005 Page 3 of 3 Photograph No.2 Resettable personal transmitter, model MCT/IR-252 Rear view

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FCC ID:GSAMCTIR252 Date: January 2005 Page 1 of 5 INTERNAL PHOTOGRAPHS This document contains 4 photographs FCC ID:GSAMCTIR252 Date: January 2005 Page 2 of 5 Photograph No.1 Resettable personal transmitter, model MCT/IR-252 Internal view FCC ID:GSAMCTIR252 Date: January 2005 Page 3 of 5 Photograph No.2 Resettable personal transmitter, model MCT/IR-252 Internal view FCC ID:GSAMCTIR252 Date: January 2005 Page 4 of 5 Photograph No.3 Resettable personal transmitter, model MCT/IR-252 PCB assembly front side FCC ID:GSAMCTIR252 Date: January 2005 Page 5 of 5 Photograph No.4 Resettable personal transmitter, model MCT/IR-252 PCB assembly rear side

DE2411U 1 MCT/IR-252 WP S Resettable Dual RF & IR Waterproof Transmitter User Guide 1. INTRODUCTION The MCT/IR-252 WP S is a miniature, water-proof, resettable, microprocessor controlled, personal transmitter designed for use in the SpiderAlert signaling network. The transmitter is used ONLY during emergencies involving security and safety of life, such that when an alarm is activated, transmissions continue during the pendency of this alarm condition. Application examples include elderly hospital patients and emergency nurse calls. The transmitter has two buttons, used for reporting three different emergency events: PANIC1 (large button), PANIC2 (small button) PANIC3 (by clicking on the two buttons simultaneously). The alarm events are supposed to be acknowledged and reset by the person who responds to the alarm message by holding a magnet close to the pendant. In the case that an event is not acknowledged, a No Response message is sent. In addition to the above-mentioned events, the transmitter also sends low-battery and supervision messages (when defined in DIP switch). The transmitter transmits coded UHF signals and pulsed infrared signals simultaneously, thereby allowing the target receiver to accurately determine the specific point at which transmission took place in multi-storey buildings. Besides the regular alert mode, in which an alert message is transmitted only once, the transmitter can be set to two additional modes – MESSAGE CYCLE and REPEATED MESSAGE CYCLING. In the message cycle mode, PANIC1, and PANIC2 messages are automatically repeated three times (initially 4 times), and a no-response message follows if the message has not been acknowledged. In the cycle repetition mode, a sequence of three alarm messages followed by a no-response message (one cycle) is repeated 5 times, unless the message is acknowledged sooner. The time interval between these messages is determined by the DIP switches (para. 3.1). When a PANIC1 message is transmitted after an PANIC2 message has been initiated, the repeated messages will be PANIC1 messages instead of PANIC2 messages. When holding an external magnet close to the unit pushbuttons, either from underneath or on top, (fig. 1), the repetitive message transmissions stop and an acknowledge message is sent. Fig. 1 – Resetting Transmitter Once the button is depressed, the LED lights and after approximately one second the message is transmitted. It is important not to cover the LED during the period of time after pressing the button. When keyed into transmission, the transmitter transmits its unique factory LARGE BUTTON SMALL BUTTON BATTERY COVER HOLES FOR CHAIN Figure 2 – MCT/IR-252 WP S programmed, randomly selected 24-bit digital ID code. There are over 16 million code possibilities, so for all practical purposes no two transmitters will have the same ID code. The dual-technology alert transmissions made by the MCT/IR-252 WP S are directed at SpiderAlert receivers. These receivers are strategically located all over the surveillance area, to pick up alert transmissions and report the ID code of the transmitter whose signal was picked up. SpiderAlert system SLC-5UPS Controller PC SR-520 RF+IR receiver SpiderBus MCT/IR-252 WP S Figure 3 – Application Configuration Reporting is accomplished via a two-wire bus routed to the SpiderAlert Local Control Unit SLC-5, that collects and transfers all data to the SpiderAlert main computer automatically displaying the holder’s nam…

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