Unit KMeter-ISO Home Assistant Integration

Unit KMeter-ISO is an integrated K-type thermocouple sensor unit that combines sensing, isolation, and communication. It uses an STM32F030 + MAX31855KASA 14-bit thermocouple digital conversion chipset to achieve high-precision temperature acquisition and conversion.

• MAX31855KASA+ Datasheet

• Communication protocol

Get the latest configuration from ESPHome

• KMeterISO ESPHome

Configure the sensor

You need to enable the I²C component in your ESPHome configuration:

# Example configuration entry for ESP32
i2c:
  sda: GPIOXX
  scl: GPIOXX
  scan: true

The GPIO pins here will vary depending on the host device used. For example, when using Atom Lite as the host:

# I2C Bus on Grove Port (HY2.0-4P)
i2c:
  sda: GPIO26
  scl: GPIO32

Unit KMeterISO configuration example

sensor:
  - platform: kmeteriso
    temperature:
      name: "KMeterISO Temperature"
    internal_temperature:
      name: "Internal Temperature"
    update_interval: 10s

Add the sensor to Home Assistant

After adding it to the Dashboard, you can view the sensor data in Home Assistant