RYI901Wireless Thermometer and Hygrometer

Applicant: FOB Instruments Ltd. FCC ID: RYI901 User Manual 90.1 RF Indoor/ Outdoor Thermometer To set clock: 1. Slide the switch at the back to clock, then press ‘Set’. 2. Press ‘Min’ to set hour. 3. Press ‘Max’ to set minute. 4. Press ‘Set’ again to confirm setting. To see the minimum temperature of the day 1. Slide the switch at the back to Outdoor. 2. Press ‘Min’ once to see the max outdoor temperature and the recorded time. 3. Press ‘Min’ twice to see the max indoor temperature and the recorded time. 4. Press ‘Min’ again to go back to room temperature. To see the maximum temperature of the day - Same operation as minimum temperature by pressing ‘Max’ instead. To clear the minimum temperature of the day 1. Press ‘Min’ and ‘Max’ at the same time to clear min outdoor temp reading in min mode. 2. Press ‘Min’ and ‘Max’ at the same time to clear min indoor temp reading in min mode. To clear the max temperature of the day - Same operation as min temperature but in max mode instead. To clear all the max and min temperature record - Press ‘Min’ and ‘Max’ at the same in room temp mode. Change of battery - Change battery when low battery icon appears on display Caution: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user authority to operate the equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. The users manual or instruction manual for an unintentional or unintentional radiator shall caution the user that changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Applicant: FOB Instruments Ltd. FCC ID: RYI901

Applicant: FOB Instruments Ltd. FCC ID: RYI901 EUT top view EUT bottom view

Applicant: FOB Instruments Ltd. FCC ID: RYI901 Proposed Label Location on EUT EUT Bottom View/Proposed FCC ID Label Location FCC ID: RYI901

Applicant: FOB Instruments Ltd. FCC ID: RYI901 EUT inside whole view

Applicant: FOB Instruments Ltd. FCC ID: RYI901 The 90.1 is a set of transmitter unit and a receiver unit ,the transmitter has a temparature and humidity sensor and is put to measure the outdoor thermo-hygro The actual thermo-hygro data is then send to the receiver through 433.925mhz carrier frequency. the receiver then pick up and display the data The transmitter is made of Colipittis oscillator, where 433.92mhz SAW resonator provides the center frequency .L2 to R6 are the matching network The 433.925mhz receiver is an enhanced super-regenerative type by adding a front–end amplifier, It is made of selective frequency network, front end amplifier, mixer, envelop detector and a comparator. the circuit of C22 ,L1 to C24 are selective frequency network, Components around the Q1 are the bias network Q1 and compoents around it are front end amplifer of super-regenerative. The signal is extracted through the mixer and envelop detector which are made of Q2 and component around it, then is amplified and output in digital form through the final stage of the comparator.

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The test report consists 24 pages in total. It may be duplicated completely for legal use with the allowance of the applicant. It shall not be reproduced except in full, without the written approval of Ke Mei Ou Laboratory Corporation. The test result in the report only applied to the tested sample. FCC TEST REPORT Under FCC 15 Subpart C, Paragraph 15.231 Prepared For : FOB INSTRUMENTS LTD. Smartime, 21DONG, CHANGZHEN VILLAGE, GONGMENG TOWN, SHENZHEN CITY OF CHINA March 18, 2004 FCC ID: RYI901 EUT: Wireless Thermometer and Hygrometer Model: 90.1 Report Type: Original Report Test Engineer: Peter Lin Test Date: February 29, 2004 Review By: Apollo Liu / Manager FEDERAL COMMUNICATIONS COMMISSION Registration Number: 125782 Ke Mei Ou Laboratory Co., Ltd. 7A, Jiaxiangge, Jiahuixincheng, No.3027, Shennan Rd., Futian, Shenzhen, Guangdong, P.R.China. Zip Code: 518033 Tel: + 86 755 83642690 Fax: + 86 755 83297077 www.kmolab.com FOB Instruments Ltd. FCC ID: RYI901 FCC ID Report Report #: KSZ2004022602J Page 2 of 24 TABLE OF CONTENTS 1. General Information...........................................................................................................................................................3 1. 1 Notes...............................................................................................................................................................................3 1. 2 Testing Laboratory..........................................................................................................................................................3 1. 3 Details of Applicant........................................................................................................................................................3 1. 4 Application Details.........................................................................................................................................................3 1. 5 Test Item.........................................................................................................................................................................3 1. 6 Test Standards.................................................................................................................................................................4 2. Technical Test.......................................................................................................................................................................5 2. 1 Summary of Test Results................................................................................................................................................5 3. EUT Modifications..............................................................................................................................................................6 4. Conducted Power Line Test................................................................................................................................................7 4. 1 Test Equipment...............................................................................................................................................................7 4. 2 Test Procedure................................................................................................................................................................7 4. 3 Test Setup.......................................................................................................................................................................7 4. 4 Configuration of The EUT..............................................................................................................................................8 4. 5 EUT Operating Condition...............................................................................................................................................9 4. 6 Conducted Power Line Emission Limits........................................................................................................................9 4. 7 Conducted Power Line Test Result...............................................................................................................................10 5. Radiated Emission Test......................................................................................................................................................11 5. 1 Test Equipment.............................................................................................................................................................11 5. 2 Test Procedure..............................................................................................................................................................11 5. 3 Radiated Test Setup......................................................................................................................................................11 5. 4 Configuration of The EUT............................................................................................................................................12 5. 5 EUT Operating Condition.............................................................................................................................................12 5. 6 Radiated Emission Limit..............................................................................................................................................12 5. 7 Radiated Emission Test Result......................................................................................................................................13 6. Band Edge..........................................................................................................................................................................14 6. 1 Test Equipment.......................................................................................................................................................…

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Applicant: FOB Instruments Ltd. FCC ID: RYI901 Radiated emission test view