The DL-300 Data Logger device is used for recording time-stamped Temperature, Humidity, CO, and Dew Point information. It can be used to record up to 450,000 records. The DL-300 data logger can be used on iOS mobile devices with its iOS app. It allows for real-time access of data using free Windows software, iOS and Android APPs. It supports DCON, Modbus RTU, M2M IoT – Internet of Things, and MQTT protocols and communicates over RS-485 and Ethernet, and can be Powered-over-Ethernet (PoE).
Large 2.8″ LCD Touch Screen, with clear Color Chart to indicate the CO/CO2 Level

Supports MQTT Protocol for IoT Applications

Powerful, Free DL300 Utility Software

Multi-platform Remote Access

iAir is designed for DL-301 data logger, and is now available on the App Store. iAir can retrieve data from DL-301 at any time and any place, and display real time data and messages on screen remotely to send daily schedules or instructions for IAQ device control to the on-site operator.
