TS4-TWB-049Wireless Monitor System

Tehama Wireless Design Group 12/9/2005 1 of 4 TempSens User Guide General Description The TempSens system consists of three device types to remotely monitor temperature readings and provide the data to a PC for formal presentation and reporting. Sensor devices will be placed in all locations requiring local monitoring of temperature. The Sensors will transmit time stamped temperature data to the single Base device in the system, which receives the data and forwards it to the host PC via a USB interface. For sensors that are out of range from the base, Repeater devices can be added in appropriate locations to relay the data between sensors and the base. The system will operate in the 865MHz (Europe/Asia) and 915Mhz (US) ISM bands using off the shelf FSK RFIC radios. The system will operate over 60 narrow band frequency channels with a baud rate of 4800bps, incorporating a bidirectional communication link with Acknowledge (ACK) messages to ensure all data reaches the base. The sensors are battery operated, bursting data packets at pre-programmed times then shutting down to conserve battery life, estimated to exceed 2 years. The repeaters will be line powered, while the base unit will be powered via line or USB interface used to communicate with the PC. With an average sensor transmission rate of four per hour, a single Base can accommodate many sensors. Through the use the ACK messages and local memory in both the sensors and repeaters (to store transmitted data that has not been confirmed as received by the base via an ACK message), the number of sensors supported can approach the theoretical maximum. There is no limit to the number of repeaters, though an average installation may require 1 repeater for every 10-15 sensors. Sensor Base Repeater iMac Repeater Repeater Sensor Sensor Sensor Sensor SensorSensor Sensor Sensor Sensor Sensor Sensor Sensor SensorSensorSensor Sensor Sensor Figure 1: Typical System Tehama Wireless Design Group 12/9/2005 2 of 4 A system consists of two or three types of hardware, and two pieces of software: • PC Database Software • Tehama Configuration Utility • One Base Unit with USB cable • A variable number of Sensors radios, each with 2 AA batteries • A variable number of Repeater radios (optional, depending on size of installation) with external DC power supply Warning Tehama Configuration Utility The following discussion assumes the base is connected a PC via the USB cable, and both the PC Database Software and the Tehama Configuration Utility are installed. This utility can be run on the PC either prior to or during a site installation, or when new sensors are added to a system. All sensors come from the factory with a default configuration, and the utility need not be run if no sensors are required to deviate from the default. The Utility will allow the following options to be configured on a sensor: • Transmit Interval, defined as the time between scheduled transmissions of temperature data. A temperature measurement is taken every Transmit Interval, and the data transmitted within 60 seconds after the measurement. The units for this parameter are seconds, and the default value is 900 seconds (15 minutes). • Measure Interval, defined as the time between scheduled temperature measurements. This is used in conjunction with Temperature Change (see below) and must be smaller than the Transmit Interval time. A value of 0 for this parameter will disable measurements in between the Transmit Interval. The units for this parameter are in seconds, with default set to 0. • Temperature Change, defined as a percentage change in the Thermistor resistance value (i.e. temperature) detected by the sensor. A Delta Temp alarm will be generated within the PC Software if a Sensor reading taken at a Measure Interval is more than Temperature Change percent from the prior Transmit Interval value. The units for this parameter are Percent (%), with the default value set to 0. No other parameters are configurable on the sensors. Absolutely no parameters are configurable on the Base or Receiver. NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR TV INTERFERENCE CAUSED BY UNAUTHORIZED MODIFICATIONS TO THIS EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE USER’S AUTHORITY TO OPERATE THE EQUIPMENT Tehama Wireless Design Group 12/9/2005 3 of 4 Usage With the Configuration Utility running on the PC, the user will install batteries into the sensor to be configured and set the Power jumper (orange). This will cause the sensor to communicate to the base and provide the currently configured parameters along with the Sensor’s unique ID number. This information will be displayed in the Config Sensor tab of the Utility. The user should change the parameters as necessary, then hit the Set button to send the changes to the Sensor. The Sensor will receive the new data and store that data in non-volatile memory. Once a sensor has been configured, it will begin to operate normally, trying to send data as programmed and sleeping otherwise, however the PC software will not receive any data from the sensors until the Configuration Utility is closed. If the configuration is being performed away from the installation site, the battery or the orange jumper may be removed for shipment, as the new settings are stored permanently in the unit. Sensor Placement With the Base Unit plugged into the PC and the PC Software running, the Sensor placement phase begins. All the Sensors should be placed at the necessary locations, then the PC program should be checked to verify which Sensors are within range of the Base Unit. Alternatively an Installation monitor may be used that pings the base and all repeaters, providing audible and visual feedback of the signal strength. With this and/or a rough drawn map of each sensor’s location, the need for repeater placement is easily identified. After the repeater(s) have been installed, the user will again check the PC program to see an updated list unseen sensors. If there…

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TW-1020HP Radio PCB (Blue) Micro 900MHz RFIC 4800 baud FSK 25KHz Channel Bandwidth Internal LC Oscillator 8MHz 32.736 KHz Crystal Tx Data Rx Data Radio Control 14.7456 MHz Crystal Switch BP Filter Power Amp DC 5V Input Switching Regulator USB Power LiOn Battery Common Vcc SPI 1 Din Clk Dout Notes: 1: SPI port used to program Micro at production test. Socket will not be installed for Production units TWB-049 Base Block Diagram Chipcon CC1020 RFMD PA2162 +28 +/- 1 dBm Output 902-928MHz Frequency Hopping Radio, +28dBm +/- 1dBm output Tehama Wireless Design Group 423 Tehama Street San Francisco, CA 94103 Linear LT3455 USB RxD TxD USB Controller TI 3410 12 MHz Crystal

423 Tehama St. San Francisco, CA 94103 415 495 7344 (v) 415 495 7314 (f) Date: 23-November-2005 Attn: Reviewing Engineer Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 RE: CONFIDENTIALITY REQUEST FOR EUT Tempsens TWB-049, FCC ID TS4- TWB-049 To Whom It May Concern: This letter serves as an official request for confidentiality under FCC Rule Section 0.459. We have requested that the schematic diagrams required for submission with this application be withheld from public review. These diagrams are company proprietary information that we wish to remain confidential. Please contact me if there is any information you may need. Sincerely, James Orton President, Tehama Wireless Design Group

423 Tehama St. San Francisco, CA 94103 415 495 7344 (v) 415 495 7314 (f) Date: 23-November-2005 Attn: Reviewing Engineer Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize MET Laboratories, Inc. to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, James Orton President, Tehama Wireless Design Group

Tehama Wireless Design Group 11/4/2005 1 of 2 TWB-049 Base/Repeater Operational Description The TWB-049 unit is a 902-298MHz frequency hopping transceiver consisting of the main micro board PCB and a high power radio PCB. Features/Specs • The TWB-049 functions as a repeater or base for companion TWS-049 Sensor units. • The system supports over 500 sensors with 15 minute transmission intervals. • Connects to PC via USB to transfer sensor data to database on PC (Base only) • Powered from either USB or external AC/DC 5V converter. Internal Li_Ion battery used for burst current needs. Charger incorporated into Power management IC (Linear LTC3455) • Jumper P2 acts to disable battery as source of power (off w/o jumper) • The TWB-049 utilizes a Chipcon CC1020 RFIC (radio frequency integrated circuit) with RFMD 2162 Power Amplifier for maximum output power of +29dBm • Baud Rate = 4800 bps, Modulation is FSK with a 4.9kHz deviation • 60 channel frequency hopping system, minimum 400KHz channel separation • Dwell time per channel is 120mS maximum, 72mS typical • The TWB-049 is controlled by 8 bit Atmel AVR micro (ATMega168V) clocked by internal 8MHz LC oscillator. • The ATMega168V contains Flash ROM for program code, EEPROM for configuration/serial number, and SRAM for CPU operation, all internal to the IC. • Real Time clock maintained by 32.768KHz crystal Operation • The TWB-049 monitors each channel in succession for sensor transmissions. Upon reception of error free data packet, it generates an Acknowledge packet back to the originating sensor on the same channel. • Unit then forwards sensor data by radio on the next available channel (if a Repeater) or by USB (if a Base) • All transmitted packets incorporate header that contains unique serial number ID of the transmitting unit. • Channel selection is based on the response to numerous TWS-049 sensors in the area. Each TWS-049 sensor has a unique, random hopping plan. • The TWB-049 generates at most one burst per channel. • Acknowledge packets contain RTC data to keep system synchronized. Clocks and Crystals: • 32.768 KHz Crystal on Main PCB • 12.00 MHz Crystal on Main PCB • 14.7456 MHz Crystal on Radio PCB • SPI Clock line at 2MHz, active only when unit is transmitting Tehama Wireless Design Group 11/4/2005 2 of 2 Frequency Map Channel # Frequency MHz Separation KHz 0902.4 1902.8400 2903.2400 3903.6400 4904400 5904.4400 6904.8400 7905.4600 8905.8400 9906.2400 10906.6400 11907400 12907.4400 13907.8400 14908.4600 15908.8400 16909.2400 17909.6400 18910400 19910.4400 20910.8400 21911.4600 22911.8400 23912.2400 24912.6400 25913400 26913.4400 27913.8400 28914.4600 29914.8400 Channel # Frequency MHz Separation KHz 30915.2400 31915.6400 32916400 33916.4400 34916.8400 35917.4600 36917.8400 37918.2400 38918.6400 39919400 40919.4400 41919.8400 42920.4600 43920.8400 44921.2400 45921.6400 46922400 47922.4400 48922.8400 49923.4600 50923.8400 51924.2400 52924.6400 53925400 54925.4400 55925.8400 56926.4600 57926.8400 58927.2400 59927.6400 Typical Hopping Plan The hopping plan is in response to multiple TWS-049 Sensors. For one sensor in the system, this is a typical hopping plan: 47 -> 21 -> 50 -> 49 -> 58 -> 28 -> 57 -> 24 -> 43 -> 5 -> 33 -> 44 -> 19 -> 32 -> 45 -> 10 -> 2 -> 34 -> 31 -> 22 -> 37 -> 8 -> 16 -> 23 -> 1 -> 14 -> 27 -> 12 -> 6 -> 39 -> 0 -> 55 -> 52 -> 48 -> 30 -> 7 -> 51 -> 54 -> 56 -> 13 -> 18 -> 40 -> 41 -> 29 -> 36 -> 42 -> 59 -> 3 -> 9 -> 11 -> 20 -> 46 -> 35 -> 38 -> 4

MET Laboratories, Inc. Safety Certification - EMI - Telecom Environmental Simulation 33439 WESTERN AVENUE ! UNION CITY, CALIFORNIA 94587-3201 ! PHONE (510) 489-6300 ! FAX (510) 489-6372 Electromagnetic Compatibility Criteria Test Report for the Tehama Wireless Design Group Inc. TempSens Model TWB-049 MODEL NUMBER: TWB-049 FCC ID: TS4-TWB-049 Verified under the FCC Certification Rules contained in Title 47 of the CFR, Part 15, Subpart C for Intentional Radiators MET Report: EMCS18669-FCC247 Prepared For: Tehama Wireless Design Group Inc. 423 Tehama Street San Francisco, CA 94103 Prepared By: MET Laboratories, Inc. 33439 Western Ave. Union City, California 94587 Tehama Wireless Design Group Inc. Table of Contents TempSens Model TWB-049 CFR Title 47, Part 15, Subpart C MET Report: EMCS18669-FCC247 © 2005, MET Laboratories, Inc. Page ii of v Electromagnetic Compatibility Criteria Test Report for the Tehama Wireless Design Group Inc. TempSens Model TWB-049 Tested Under The FCC Certification Rules contained in Title 47 of the CFR, Part 15, Subpart C for Intentional Radiators Shawn McMillen, Project Engineer Electromagnetic Compatibility Lab Engineering Statement: The measurements shown in this report were made in accordance with the procedures indicated, and the emissions from this equipment were found to be within the limits applicable. I assume full responsibility for the accuracy and completeness of these measurements, and for the qualifications of all persons taking them. It is further stated that upon the basis of the measurements made, the equipment tested is capable of operation in accordance with the requirements of Part 15, Section 15.247 of the FCC Rules under normal use and maintenance. Tony Permsombut, Manager, Electromagnetic Compatibility Lab Tehama Wireless Design Group Inc. Table of Contents TempSens Model TWB-049 CFR Title 47, Part 15, Subpart C MET Report: EMCS18669-FCC247 © 2005, MET Laboratories, Inc. Page iii of v Table of Contents I. Executive Summary .................................................................................................................................................1 A. Purpose of Test ...................................................................................................................................................2 B. Executive Summary ............................................................................................................................................2 II. Equipment Configuration .......................................................................................................................................3 A. Overview.............................................................................................................................................................5 B. References...........................................................................................................................................................5 C. Test Site ..............................................................................................................................................................5 D. Description of Test Sample.................................................................................................................................5 E. Equipment Configuration....................................................................................................................................7 F. Support Equipment .............................................................................................................................................7 G. Ports and Cabling Information ............................................................................................................................8 H. Mode of Operation..............................................................................................................................................8 I. Method of Monitoring EUT Operation ...............................................................................................................8 J. Modifications ......................................................................................................................................................8 a) Modifications to EUT....................................................................................................................8 b) Modifications to Test Standard......................................................................................................8 K. Disposition of EUT .............................................................................................................................................8 III. Electromagnetic Compatibility Criteria for Intentional Radiators .....................................................................9 § 15.203 Antenna Requirement ............................................................................................................................. 10 § 15.207(a) Conducted Limits ............................................................................................................................... 11 § 15.209(a) Radiated Emission Limits ................................................................................................................. 15 § 15.247(a) Bandwidth & Channelization Requirements ..................................................................................... 18 § 15.247(b) Output Power and RF Exposure........................................................................................................ 25 § 15.247(c) Spurious Emissions Requirements – Radiated and RF Conducted ................................................... 29 IV. Test Equipment ......................................................................................................................................................41 V. Certification & User’s Manual Information...........................…

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Electromagnetic Compatibility Tehama Wireless Design Group Inc. Test Equipment TempSens Model TWB-049 CFR Title 47, Part 15, Subpart C MET Report: EMCS18669-FCC247 © 2005, MET Laboratories, Inc. Page 25 of 53 Electromagnetic Compatibility Criteria for Intentional Radiators § 15.247(b) Output Power and RF Exposure Test Requirements: §15.247(b): The maximum peak output power of the intentional radiator shall not exceed the following: . Frequency Hopping Systems Band (MHz) Output Limit for systems with 25 to <50 Channels (Watts) Output Limit for systems with ≥ 50 Channels (Watts) 902-928 0.250 1.000 2400–2483.5 0.125 1.000 5725– 5850 1.000 1.000 Table 9. Output Power Requirements from §15.247 Except for: Systems operating in the 2400– 2483.5 MHz band, and 5725– 5850 MHz band that are used exclusively for fixed, point-to-point operations, if transmitting antennas of directional gain greater than 6 dBi are used the peak output power from the intentional radiator shall be reduced below the stated values in the Table 9, as appropriate, by the amount in dB that the directional gain of the antenna exceeds 6 dBi. Systems operating in the 2400– 2483.5 MHz band may employ transmitting antennas with directional gain greater than 6 dBi provided the maximum peak output power of the intentional radiator is reduced by 1 dB for every 3 dB that the directional gain of the antenna exceeds 6 dBi. Systems operating in the 5725– 5850 MHz band that are used exclusively for fixed, point-to- point operations may employ transmitting antennas with directional gain greater than 6 dBi without any corresponding reduction in transmitter peak output power. Fixed, point-to-point operation excludes the use of point-to-multipoint systems, omni-directional applications, and multiple co-located intentional radiators transmitting the same information. The operator of the spread spectrum intentional radiator or, if the equipment is professionally installed, the installer is responsible for ensuring that the system is used exclusively for fixed, point-to-point operations. The instruction manual furnished with the intentional radiator shall contain language in the installation instructions informing the operator and the installer of this responsibility. Electromagnetic Compatibility Tehama Wireless Design Group Inc. Test Equipment TempSens Model TWB-049 CFR Title 47, Part 15, Subpart C MET Report: EMCS18669-FCC247 © 2005, MET Laboratories, Inc. Page 26 of 53 Test Requirements (cont.): RF Exposure Requirements - §15.247(b)(5); §1.1307(b)(1): Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the Commission’s guidelines. MPE Limit Calculation: EUT’s operating frequencies @ 902 - 928 MHz; EIRP = 30.25 dBm therefore, Limit for Uncontrolled exposure: 1 mW/cm 2 or 10 W/m 2 Equation from page 18 of OET 65, Edition 97-01 S = PG / 4πR 2 where, S = Power Density P = Power Input to antenna (0.595 Watts) G = Antenna Gain (2.5 dBi) – numeric gain (1.77) R = distance to the center of radiation of the antenna (20 cm or 0.2 m) S = 0.595W*1.77 / 4*3.14*(0.2m) 2 = 1.054W / 0.5024m 2 = 2.099W/m 2 Test Procedure: The EUT was connected to the spectrum analyzer. The output power was measured and recorded. Test Results: Equipment complies with the Output Power and RF Exposure limits of § 15.247 (b). The peak output power was determined from the plots on the following page(s). Modulation Channel (MHz) Max Conducted Power (dBm) Antenna Gain (dBi) EIRP (dBm) EIRP(mW) FSK 902.4 27.75 2.5 30.25 1059 FSK 915.2 27.68 2.5 30.18 1042 FSK 927.6 27.43 2.5 29.93 984 Test Engineer: Shawn McMillen Test Date(s): November 14 – 17 th , 2005

Electromagnetic Compatibility Tehama Wireless Design Group Inc. Test Equipment TempSens Model TWB-049 CFR Title 47, Part 15, Subpart C MET Report: EMCS18669-FCC247 © 2005, MET Laboratories, Inc. Page 14 of 53 Electromagnetic Compatibility Criteria for Intentional Radiators § 15.207(a) Conducted Emissions Photograph 1. Conducted Limits, Test Setup Electromagnetic Compatibility Tehama Wireless Design Group Inc. Test Equipment TempSens Model TWB-049 CFR Title 47, Part 15, Subpart C MET Report: EMCS18669-FCC247 © 2005, MET Laboratories, Inc. Page 17 of 53 Electromagnetic Compatibility Criteria for Intentional Radiators § 15.209(a) Radiated Emission Photograph 2. Radiated Emission Test Setup Electromagnetic Compatibility Tehama Wireless Design Group Inc. Test Equipment TempSens Model TWB-049 CFR Title 47, Part 15, Subpart C MET Report: EMCS18669-FCC247 © 2005, MET Laboratories, Inc. Page 40 of 53 Photograph 3: Radiated measurement setup 1-10GHz