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Home / Computer Hardware, Monitors & Peripherals / GY-39 Serial MAX44009 Light Intensity, BME280 Temperature & Humidity High-Precision Sensor Module

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Interface Type UART / I2C Selectable
Light Sensor IC MAX44009
Environmental IC BME280
Input Voltage 3.3V to 5V DC
Light Measurement Range 0.045 to 188,000 Lux
Temperature Range -40°C to +85°C
Humidity Range 0 to 100% RH
PCB Dimensions 23mm x 15mm x 3mm
Net Weight 3.5 grams
Mounting Holes 2 x 3mm diameter

5 reviews

A

Anonymous

Mar 19, 2026

Rating: 5/5

Great for Arduino Projects

Works perfectly with my Uno. The light readings are very responsive and the temperature seems accurate compared to my thermometer.

A

Anonymous

Mar 13, 2026

Rating: 5/5

Plug and Play

Easy to integrate with ESP32. Library support is widespread which made coding very simple.

A

Anonymous

Feb 28, 2026

Rating: 5/5

Excellent Precision

Using this for greenhouse monitoring. The humidity data is consistent and the light sensor handles direct sun well.

A

Anonymous

Feb 19, 2026

Rating: 3/5

Decent Module

The hardware works fine but the documentation link provided was broken. Had to search online for code examples.

A

Anonymous

Feb 19, 2026

Rating: 4/5

Good Value Sensor

Accurate readings but the pins are a bit tight for my jumper wires. Overall good value for the price.

5 FAQ

Q: Does this module work with 5V logic levels?

A: Yes, the module supports input voltage from 3.3V to 5V DC and is compatible with 5V logic microcontrollers.

Q: Is there a specific library required for the BME280?

A: It is compatible with most standard BME280 libraries available for Arduino and PlatformIO.

Q: What is the default I2C address?

A: The default I2C address for the BME280 part is typically 0x76, but please check the datasheet for configuration options.

Q: Are connecting wires included in the package?

A: No, the package includes only the sensor module with header pins soldered. Wires are sold separately.

Q: Can this sensor be used outdoors in the rain?

A: No, the PCB is not waterproof. It should be housed in a protective enclosure if used outside.

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