Sonoff Si7021 temperature/humidity sensor for Sonoff board

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Sonoff TH Sensor Si7021 (Itead IM170714003) Temperature and Humidity Sensor

 

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 TH10/TH16.

 

  • 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

  • Si7021(wiki)

 

Interface Description

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.

Si7021 Interface description.png

Audio Connector

Si7021 audio connector.jpg

Pins

Pin

Name

Description

1

VCC

Power supply 2.2~3.6VDC

2

GND

GND

3

NC

NC

4

DATA

Single bus, data port

The manufacture company:
SONOFF
Product Specification
Sensors:
Temperature resistive sensor, Humidity capacitive sensors
Compatibility:
TH10 / TH16
Power Supply:
3.3V~5.2V
Dimension:
  • 90*41*27mm (L*W*H)
Operating Temperature:
  • 3% RH (10...90RH)

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