M5Stack Unit NCIR 2 Temperature Sensor MLX90614

The M5Stack Unit NCIR 2 is a non-contact infrared single-point temperature sensor based on the Melexis MLX90614ESF-BAA. It measures the surface temperature of objects and bodies without physical contact over a range of -70 to 380 °C for object temperatures and -40 to 125 °C for ambient temperature. An integrated STM32F030F4P6 microcontroller handles data processing and enables high and low temperature alarm functions, which are directly configurable on the module.

Features:

MLX90614ESF-BAA infrared sensor measures non-contact object temperatures from -70 to 380 °C and ambient temperatures from -40 to 125 °C, factory calibrated
Integrated STM32F030F4P6 MCU processes sensor data and enables configurable high and low temperature alarm functions directly on the module
Onboard display with RGB LED and buzzer for visual and acoustic temperature alarms without external controller
I2C interface via Grove HY2.0-4P (address 0x5A) for easy integration into M5Stack, Arduino, ESP32, and Raspberry Pi projects
Standalone operation possible – the module can also be used without a connected host controller for temperature alarms
Two building block-compatible holes for easy mounting and integration into constructions

Application Examples:

Non-contact body temperature measurement for access control, medical pre-screening stations, or smart home applications
Industrial process monitoring – temperature acquisition of machines, engines, or heaters without sensor contact
Fire early warning and high-temperature monitoring with configured alarm via buzzer and RGB LED
Environmental and building monitoring with continuous non-contact temperature acquisition via I2C
Smart home integration in Home Assistant or UIFlow for automated temperature controls