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AJMRTC GY-39 4-in-1 Environmental Sensor Module, Serial UART I2C Output, Detect Light Intensity Temperature Humidity Atmospheric Pressure, DIY Electronic Weather Sensor for Arduino STM32 IoT Project,
- - 4-in-1 integrated sensor: Measures light intensity, temperature, humidity and barometric pressure in one compact module
- - Dual communication options: UART TTL serial and I2C interface, configurable baud rate 9600/115200bps for flexible connection
- - Built-in MCU auto-calculates environmental data, supports power-down memory saving for stable long-term monitoring
- - DC 3V-5V wide working voltage, low power consumption, easy wiring for Arduino, STM32 and other microcontrollers
- - Great for DIY weather station, smart home, greenhouse monitoring, light control and IoT environmental data collection
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AJMRTC GY-39 is a multi-functional 4-in-1 environmental sensor module combining MAX44009 light sensor and BME280 temperature, humidity & pressure sensor chips. It integrates an on-board MCU to collect and process raw sensor signals and output ready-to-read environmental data directly.
This module supports both UART serial (TTL level) and I2C communication. Users can switch between continuous output and query output modes, and saved configurations will remain after power off. It runs on DC 3V to 5V power supply with low power draw, easy to mount on breadboards and embedded projects.
Perfect for electronic hobbyists and makers to build weather stations, indoor climate monitoring systems, smart lighting controls, greenhouse environment trackers and other IoT devices. Sample codes for Arduino and STM32 are available to speed up your prototyping work. Package includes 1 piece GY-39 sensor module.
- Brand: AJMRTC
- Model: GY-39
- Sensing Chips: MAX44009 (Light) + BME280 (Temp, Humidity, Pressure)
- Measured Parameters: Light Intensity, Temperature, Humidity, Atmospheric Pressure
- Communication: UART(TTL) / I2C
- Baud Rate: 9600bps / 115200bps configurable
- Working Voltage: DC 3V - 5V
- Temperature Range: -40 ~ +85
- Humidity Range: 0~100%RH (non-condensing)
- Pressure Range: 300~1100hPa
- Dimension: 24.3 × 26.7 mm
- Package: 1 × GY-39 Sensor Module
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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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