MLX90614-BAA Contactless IR Temperature Sensor Module, Serial Interface
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Prices updated: 12 Oct 2026
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About this product
A contactless infrared temperature sensor module built around the MLX90614-BAA, which measures ambient and object temperature without touching the target. It communicates over a serial interface at 9600 bps by default or 115200 bps, and runs from a 3 to 5 V supply. It suits microcontroller projects that need non-contact temperature readings at close range.
Specifications
- Supply voltage
- 3-5 V
- Current
- 5 mA
- Ambient temperature range
- -40 to +125 °C
- Target temperature range
- -70 to +380 °C
- Measuring distance
- Close range, 1-2 cm
- Baud rate
- 9600 or 115200 bps
- Serial format
- 8 data bits, no parity, 1 stop bit
- Default output rate
- 14 Hz
Frequently asked questions
How do I wire it to an Arduino or ESP32?
Power the module from a 3 to 5 V supply with a common ground, then connect its serial TX and RX lines to a UART on the board, crossing TX to RX. Set the baud rate to match the module's configuration.
What is the measuring distance?
The listing gives a close-range measuring distance of 1 to 2 cm, so the module should be placed close to the target surface.
