Product description Sonoff SI7021 is a temperature and humidity sensor / jack sensor, for the TH16/TH10 smart switch and S22 socket. It allows to measure temperature from -40 to +85°C with measurement resolution of 0.1°C, measurement accuracy is +/- 0.5°C. Humidity is measured in the range 0...99.9 %RH with a resolution of 0.1% RH, while the accuracy is +/- 3% RH (at 25°C). The device guarantees fast response and resistance to interference. Specification

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Model SI7021 Power supply 2,2 V do 3,6 V Adjustable resolution 9-12 Working temperature -40 ° C / + 85 ° C Working humidity 0 % do 100% RH Output cable Jack Cable lenght 50 cm Weight 26 g