多功能的无线电气象站

1. TX measurement range: -30°C to 70°C. Measurement accuracy: +/-1°C 2. RX measurement range: 0°C to 60°C. Measurement accuracy: +/-1°C 3. Relative humidity measurement range: 25% RH to 90% RH. Measure accuracy: +/-5%RH 4. Calendar adjust range: 2000 year to 2009 year, Jan 31 to Dec. 31, with the week showing (Mon. to Sun) 5. Automatic alarm clock setting 6. Measurement unit: C degree/F degree 7. Wireless frequency: 433.825MHz 8. Open place (no bar) communication distance: 25 meters (1.5 meter up from the floor) 9. Outdoor operating voltage: 3V 10. Indoor operating voltage: 4.5V 11.Sensitivity:-85dbm 12. Getting the samples: RX once every 15 seconds when the opening time is less than 4 minutes; once every3minutes when the opening time ismore than 4 minutes TX once every 15 seconds when the opening time isless than 4 minutes; once every1 minute when the opening time ismore than 4 minutes 13. Static current: RX <=30uA, TX<=5uA; Working current:RX <=4mA, TX<=15mA; 14. clock alarm: >=70dB