P3L-NEXA-3-2012Weather Station Radio with Wireless In/Out Thermometer

9.) 14 Aug., 2012

Power supply (U2, U4) MCU (U1) Backlight + LCD Humidity Sensor (RH) Air pressure buzzer(BZ) RF receiver AM+ FM Radio (U7,U5) Key buttons Op-amp based Comparator (U100)(Data Recovery) 433MHz Superregenerative Receiver (Q100) (Alarm) LED (D5) (2 X 3.3V regulator s ) 32768Hz (Y1) 32768Hz (Y2) Sensor(U200) Line in and Power amplifier (U6)

letter of agency.jpg (1651x2335x24b jpeg)

INTERTEK TESTING SERVICE Report No.: HK12080812-1 Equipment Photographs Model : KR5521A (External) FCC ID: P3L-NEXA-3-2012

14 Aug., 2012 Letter size 1mm

Technical Description of KR5521A KR5521A (EUT) is an AM-FM radio with a 433MHz receiver which receives the out- door temperature data from corresponding transmitter. The EUT has line-in features. 1. MK9A50 (U1) is an 8-bit MCU which also driving LCD display (LCD1). 2. LED (D5) and Q2 provide backlight features for the LCD display. 3. Y1 is 32768Hz crystal providing system clock for MCU (U1) and as well as air pressure/temperature sensor (U200). 4. U2 and U4 are 3.3V voltage regulators. 5. KT0922M (U5) is a digital AM/FM radio tuner. Q4 is for selecting AM or FM. 6. Y2 is 32768Hz crystal providing reference clock for U5. 7. 24C02 (U7) is serial 2K EEPROM for U5 configuration setup programming. 8. TDA2822 (U6) is dual power amplifier but driving loudspeaker in mono. 9. Q100 acts as the 433MHz super-regenerative receiver. 10. SGM358YS (U100) is a CMOS op-amp comparator for data recovery. 11. HP02S (U200) is a piezo-resistive pressure and temperature sensor module. 12. CHR02 (RH) is a humidity sensor. 13. Alarm feature is provided by a Buzzer (BZ) which is driven by Q1. The EUT is powered by 5X 1.5V "AAA" batteries and/or 120VAC.

•••• • •• <Drawn By> <Checked By> <QC By> <Released By> <Drawn Date><Checked Date><QC Date><Release Date> <Code> B <Scale> 1 2 REV: SIZE: CODE: DRAWN: DATED: DATED: CHECKED:QUALITY CONTROL: DATED: DATED: RELEASED: COMPANY:TITLE: DRAWING NO: SHEET: OF SCALE: REVISION RECORD APPROVED: ECO NO: ABD DATE: 1 2 3 4 5 6 DCAB C LTR 58 COM8/PC5 57 COM7/PC0 56 COM6/PC1 55 COM5/PC2 54 COM4 53 COM3 52 COM2 51 COM1 50 SEG1 49 SEG2 48 SEG3 47 SEG4 46 SEG5 45 SEG6 44 SEG7 43 SEG8 42 SEG9 41 SEG10 40 SEG11 39 SEG12 38 SEG13 37 SEG14 36 SEG15 35 SEG16 34 SEG17 33 SEG18 32 SEG19 31 SEG20 30 SEG21 29 SEG22 28 SEG23/PC6 27 SEG24/PC7 26 SEG25/PE0 25 SEG26/PE1 68 SUB 59 CUP2 60 CUP1 61 VDD3 62 VDD2 63 VDD1 64 GND 65 XO2 66 XI2 67 VR2 1 S42/XO1/PC4 2 S41/XI1/PC3 3 PA7/RST 4 PA6/OSCI 5 PA5/OSCO 6 PA4/BZ 7 PA3/RH 8 PA2/RT 9 PA1/RR 10 PA0/CX 11 SEG40/PD7 12 SEG39/PD6 13 SEG38/PD5 14 SEG37/PD4 15 SEG36/PD3 16 SEG35/PD2 17 SEG34/PD1 18 SEG33/PD0 19 SEG32/PE7 20 SEG31/PE6 21 SEG30/PE5 22 SEG29/PE4 23 SEG28/PE3 24 SEG27/PE2 U1 C1 104 C2104 C3104 C4 ••• C5 ••• Y1 32768Hz ••••• ••••••• 12 ••••• •••••• ••••••••••• ••••• ••••••• •••• ••••• R82K R9 47K L1 C8 4.7uF ••• 1 2 3 Q1 9013 1 2 3 Q3 9013 BZ+ BZ- 123 RF-JACK 1 VDD 2 SCL 3 SDA 4 GND (U200) PRESSURE AND TEMPERATU R E SENSOR C11 4.7uF C12 104 R1347K 1 2 3 Q2 9013 KA D5 LED R15 33R ••••• 104 R4 47K 1 C4 2 C3 3 C2 4 C1 5 S1 6 S2 7 S3 8 S4 9 S5 10 S6 11 S7 12 S8 13 S9 14 S10 15 S11 16 S12 17 S13 18 S14 19 C5 20 C6 21 C7 22 C8 23 C1 24 C2 25 C3 26 C4 27 C5 28 C6 29 C7 30 C8 31 S15 32 S16 33 S17 34 S18 35 S19 36 S20 37 S21 38 S22 39 S23 40 S24 41 S25 42 S26 43 S27 44 S28 LCD1 5522LCD •• •••• •••• VDD45-1 2 IN 3 OUT 1 GND U2 3V •••• VDD30-1 IN OUT GND U3 5344 IN OUT GND U4 •••• BAT--1 R1 510R R2 1M •• R6 51K C6102 R3 510R R12 1M •• R23 51K •••••••••••• D1 D2 ••••••••• ••• ••• •••••• ••• ••• BUZZER•••••••••••••••• ••••••••RF_DAT••••••••••••••••••••••••••••RRRT KEY_IN1KEY_IN2KEY_IN3 ••••••••KEY_OUT1 LCD1 SEG01SEG02SEG03SEG04SEG05SEG06SEG07SEG08SEG09SEG10SEG11SEG12SEG13SEG14SEG15SEG16SEG17SEG18SEG19SEG20SEG21SEG22SEG23SEG24SEG25SEG26SEG27SEG28COM01COM02COM03COM04COM05COM06COM07COM08 RF_POWER RF_PWR VCC BUZZER VCC SDA SCL RF_POWER RF_DAT LIGHT VCC VCC 4.5V V_DC COM01COM02COM03COM04 SEG01SEG02SEG03SEG04SEG05SEG06SEG07SEG08SEG09SEG10SEG11SEG12SEG13SEG14 COM05COM06COM07COM08COM01COM02COM03COM04COM05COM06COM07COM08 SEG15SEG16SEG17SEG18SEG19SEG20SEG21SEG22SEG23SEG24SEG25SEG26SEG27SEG28 KEY_IN1 VCC 4.5V VCC-R VCC-RADIO 4.5V V_DC VCC RT RRRX RH •• AM/FM VCC B- $$$30478 $$$5076 SCL SDA XCLR Buzzer BZ Humidity Sensor (RH) MCLK MCLK 32768HzXCLR 56 RH <Drawn By> <Checked By> <QC By> <Released By> <Drawn Date><Checked Date><QC Date><Release Date> о³ п Ƽ¼ 5521 <Code> B R0 0 <Scale> 2 2 REV: SIZE: CODE: DRAWN: DATED: DATED: CHECKED:QUALITY CONTROL: DATED: DATED: RELEASED: COMPANY:TITLE: DRAWING NO: SHEET: OF SCALE: REVISION RECORD APPROVED: ECO NO: ABD DATE: 1 2 3 4 5 6 DCAB C LTR CH DVSS ROUT LOUT AVSS AVD XI XO VOL SDA SCL RFGND FMI AM2 AM1 EN U5 KT0922M 45 6 R14-A RESVAR-SW 31 2 R14-B RESVAR-SW R16 •••• R17 •••• R25 10K ++ -- 8765 3 42 1 U6 TDA2822 R24 3.3k C38 102 C27 10UF C23 104 R18 4R7 SP+ SP- C7 ••• C9 ••• C13 ••• C14 20P C1520P Y2 32768Hz ••• ••• •• 1 A0 2 A1 3 A2 4 GND 8 VDD 7 WP 6 SCL 5 SDA U7 24C02 R19 •••• C16 102 45 6 R20-A RESVAR-SW 31 2 R20-B RESVAR-SW R21 •••• R22 •••• 1 2 3 Q4 9013 R26 •••• 1 1 2 2 3 3 4 4 5 5 8 8 6 6 7 7 U8 123456 U11 CON6 123456 U12 CON6 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 U15 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 U16 VCC-RADIO VCC-RADIO VCC-RADIO VCC-RADIO VCC-RADIO VCC-RADIO VCC-RADIO VCC-R VCC-RADIO AM/FM V_DC B- AOUT AOUT LUXIN SP+ SP- SP- LUXIN $$$30478 $$$30478 $$$5076 $$$5076 AM/FM AM/FM GND GND KEY_IN1 KEY_IN1 KEY_IN1 KEY_IN1 KEY_IN2 KEY_IN2 KEY_IN3 KEY_IN3 KEY_IN3 KEY_IN3 KEY_OUT1 KEY_OUT1 KEY_OUT2 KEY_OUT2 KEY_OUT2 KEY_OUT2 VCC-R VCC-R V_DC V_DC $$$30478 433.9MHz U100 Q100

- The test report only allows to be revised within the retention period unless further standard or the requirement was noticed. - This report is for the exclusive use of Intertek's Client and is provided pursuant to the agreement between Intertek and its Client. Intertek's responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to permit copying or distribution of this report and then only in its entirety. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results in this report are relevant only to the sample tested. This report by itself does not imply that the material, product, or service is or has ever been under an Intertek certification program. Intertek Testing Services Hong Kong Ltd. 2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Tel: (852) 2173 8888 Fax: (852) 2785 5487 Website: www.hk.intertek-etlsemko.com TEST REPORT Report No.: HK12080812-1 King's Manufacturing Co., Ltd. Application For Certification (Original Grant) (FCC ID: P3L-NEXA-3-2012) Superregenerative Receiver Prepared and Checked by: Approved by: Signed On File Wong Cheuk Ho, Herbert Engineer Chan Chi Hung, Terry Assistant Supervisor Date: September 06, 2012 INTERTEK TESTING SERVICES Report No.: HK12080812-1 FCC ID: P3L-NEXA-3-2012 i GENERAL INFORMATION King's Manufacturing Co., Ltd. BRAND NAME: NEXA, MODEL: KR5521A FCC ID: P3L-NEXA-3-2012 Grantee: King's Manufacturing Co., Ltd. Grantee Address: Room 1004, Peninsula Square, 18 Sung On Street, Hunghom, Kowloon, Hong Kong. Contact Person: Chow Peter Tel: 852-2265 3918 Fax: 852-2365 6257 e-mail: [email protected] Manufacturer: N/A Manufacturer Address: N/A Brand Name: NEXA Model: KR5521A Type of EUT: Superregenerative Receiver Description of EUT: Weather Station Radio with Wireless In/Out Thermometer Serial Number: N/A FCC ID: P3L-NEXA-3-2012 Date of Sample Submitted: August 16, 2012 Date of Test: August 31, 2012 Report No.: HK12080812-1 Report Date: September 06, 2012 Environmental Conditions: Temperature: +10 to 40°C Humidity: 10 to 90% INTERTEK TESTING SERVICES Report No.: HK12080812-1 FCC ID: P3L-NEXA-3-2012 ii SUMMARY OF TEST RESULT King's Manufacturing Co., Ltd. BRAND NAME: NEXA, MODEL: KR5521A FCC ID: P3L-NEXA-3-2012 TEST SPECIFICATION REFERENCE RESULTS Maximum Peak Output Power 15.247(b), (c) / RSS-210 A8.4 N/A Hopping Channel Carrier Frequencies Separation 15.247(e) / RSS-210 A8.1 N/A 20dB Bandwidth of the Hopping Channel 15.247(a) / RSS-210 A8.1 N/A Number of Hopping Frequencies 15.247(e) / RSS-210 A8.1 N/A Average Time of Occupancy of Hopping Frequency 15.247(e) / RSS-210 A8.1 N/A Antenna Conducted Spurious Emissions 15.247(d) / RSS-210 A8.5 N/A Radiated Spurious Emissions 15.247(d) / RSS-210 A8.5 N/A RF Exposure Compliance 15.247(i) / RSS-Gen 5.6 N/A Transmitter Power Line Conducted Emissions 15.207 / RSS-Gen 7.2.4 N/A Transmitter Field Strength 15.227 / RSS-310 3.8 N/A Transmitter Field Strength 15.229 / RSS-210 A2.7 N/A Transmitter Field Strength, Bandwidth and Timing Requirement 15.231(a) / RSS-210 A1.1.1 N/A Transmitter Field Strength, Bandwidth and Timing Requirement 15.231(e) / RSS-210 A1.1.5 N/A Transmitter Field Strength and Bandwidth Requirement 15.239 / RSS-210 A2.8 N/A Transmitter Field Strength and Bandwidth Requirement 15.249 / RSS-210 A2.9 N/A Transmitter Field Strength and Bandwidth Requirement 15.235 / RSS-310 3.9 N/A Receiver Radiated Emissions 15.109 / RSS-Gen 6.1 Pass Receiver Conducted Emissions 15.107 / RSS-Gen 7.2.4 Pass Note: 1. The EUT uses a permanently attached antenna which, in accordance to section 15.203, is considered sufficient to comply with the pervisions of this section. 2. Pursuant to FCC part 15 Section 15.215(c), the 20 dB bandwidth of the emission was contained within the frequency band designated (mentioned as above) which the EUT operated. The effects, if any, from frequency sweeping, frequency hopping, other modulation techniques and frequency stability over excepted variations in temperature and supply voltage were considered. INTERTEK TESTING SERVICES Report No.: HK12080812-1 FCC ID: P3L-NEXA-3-2012 iii Table of Contents 1.0 General Description....................................................................................... 1 1.1 Product Description ...................................................................................... 1 1.2 Related Submittal(s) Grants .......................................................................... 1 1.3 Test Methodology ......................................................................................... 1 1.4 Test Facility .................................................................................................. 1 2.0 System Test Configuration ............................................................................ 2 2.1 Justification................................................................................................... 2 2.2 EUT Exercising Software .............................................................................. 2 2.3 Special Accessories...................................................................................... 2 2.4 Equipment Modification................................................................................. 2 2.5 Measurement Uncertainty ............................................................................. 2 2.6 Support Equipment List and Description........................................................ 2 3.0 Emission Results ........................................................................................... 3 3.1 Field Strength Calculation .....................................................…

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INTERTEK TESTING SERVICES Report No.: HK12080812-1 Sample No.: 2/2 Code: FCC15C_f / Effective Date: 24 Jun 2011 ( of ) 150 kHz30 MHz 1 PK CLRWR 2 AV CLRWR SGL TDS 6DB dBμV dBμV AC RBW 9 kHz MT 100 ms PREAMP OFFAtt 10 dB AUTO 1 MHz10 MHz 0 10 20 30 40 50 60 70 80 90 100 CF15MAV CF15MQP Conducted Emission

INTERTEK TESTING SERVICES Report No.: HK12080812-1 Sample No.: 2/2 Code: FCC15C_f / Effective Date: 24 Jun 2011 ( of ) Superregenerative Receiver Plot

INTERTEK TESTING SERVICE Report No: HK12080812-1 FCC ID: P3L-NEXA-3-2012 Configuration Photographs Worst-Case Radiated Emissions (Front View) Model: KR5521A INTERTEK TESTING SERVICE Report No: HK12080812-1 FCC ID: P3L-NEXA-3-2012 Configuration Photographs Worst-Case Radiated Emissions (Rear View) Model: KR5521A