CL-250-E O2/Temperature/Humidity/Dew Point Data Logger Module


Key Features

  • Able to record O2, Temperature, Humidity and Dew Point Measurements
  • Up to 450,000 records with date and time stamps
  • Simple and Powerful Software Utility, iOS APP and Android App Included
  • Supports the DCON, Modbus RTU/TCP, and MQTT Protocols
  • Includes RS-485/Ethernet/Communication Interfaces
  • Relay Output for Alarm or IAQ Device Control
  • Ceiling Mounting or Wall Mounting


The ICP DAS CL-25X-E series of O2 and gas measurement module that measures oxygen gas (O2) in air.  In addition, various fume concentrations related to human health can also be measured. For example: CO / CO2 / temperature / humidity and dew point information, including the date and time stamps, and are able to store up to 450,000 downloadable records.

Real-time data can be accessed from the CL-250-E data logger from anywhere and at any time using the free Windows software, the Iso App, or the Android App, as long as they are connected to the same local network as the data logger. Support is provided for common industrial protocols such as DCON, Modbus RTU, and Modbus TCP, as well as the emerging machine to-machine (M2M)/)IoT (Internet of Things) connectivity protocol – MQTT.

The CL-250-E data logger can be connected via widely used communication interfaces including RS-485, Ethernet and PoE, meaning that the device can be easily integrated into existing HMI or SCADA systems, ensuring trouble-free maintenance in distributed control systems

Supports the MQTT Protocol for IoT Applications

Multi-platform Remote Access Software

Simple and Powerful iAir Utility