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AJMRTC GY21 Si7021 I2C IIC Low Power CMOS Temperature Humidity Sensor Module, High Precision Digital Temp Humidity Detector for Arduino STM32 Microcontroller DIY Projects
- - GY21 module built with Si7021 CMOS sensor, delivers high-precision digital temperature and humidity readings
- - I2C(IIC) communication interface, simple wiring and easy to connect with mainstream microcontrollers
- - Ultra low power consumption design, perfect for battery-powered portable monitoring devices
- - Good long-term stability and anti-interference performance for indoor environmental measurement
- - Compact breakout board, great for greenhouse monitoring, weather station and embedded DIY projects
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AJMRTC GY21 Si7021 temperature and humidity sensor module adopts low-power CMOS Si7021 chip to measure ambient temperature and relative humidity with high accuracy. It communicates via standard I2C IIC bus, which supports easy connection to Arduino, STM32 and other MCUs. The sensor features ultra-low power draw, making it suitable for battery-operated equipment. It maintains stable measurement performance for indoor environments. This module is widely used for smart home monitoring, greenhouse environment detection, small weather station prototypes and electronic DIY projects.
- Brand: AJMRTC
- Model: GY21
- Sensor Chip: Si7021
- Interface: I2C / IIC
- Sensing Type: CMOS Digital Temp & Humidity
- Feature: Low Power Consumption, High Precision
- Application: Environment Monitoring, Microcontroller DIY Projects
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by ThermalNest Return Policy
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