Sonoff Si7021 Temperature and Humidity Sensor is a digital temperature and humidity sensor with a calibrated digital signal output. It adopts dedicated digital module acquisition technology and temperature&humidity sensing technology to ensure that the sensor has a very high reliability and excellent long-term stability. The sensor includes an integrated single-chip temperature and humidity sensor chip, which connects to a high-performance 8-bit MCU. The Si7021 sensor has advantages such as excellent quality, ultra-fast response, anti-interference ability and cost-effective. The sensor has 2.5mm 4-pole stereo audio male plug connector, which works perfectly with Sonoff TH16, S22 Socket.
- Relative humidity and temperature measurement
- All calibrated, digital output
- Good long-term stability
- No additional parts required
- Ultra-low energy consumption
- The sensor is fully interchangeable
|Operating temp. & Measuring range||Ta||-40||–||+85||℃|
|80-100||See Figure 1|
|-40≤Ta≤125||See Figure 2|
Figure 1. RH Accuracy at 30℃
Figure 2. Temperature Accuracy
It is recommended that the DATA pin use a 10K pull-up resistor and a 100nF capacitor can be added between the power supply pins (VCC, GND) for decoupling.
|1||VCC||Power supply 2.2~3.6VDC|
|4||DATA||Single bus, data port|
Sonoff Temperature and Humidity Sensor Si7021