Dragino DR-CL | Integrated Residual Chlorine Sensor (RS485) Model:Chlorine Measuring Range: 0-2 mg/L • 1 x Milesight WS502

• 1 x Milesight WS502 Smart Wall Switch (EU)

• Cold Chain & Logistics: Maintain compliance in refrigerated trucks and warehouses by tracking temperature fluctuations in real-time

3 kHz sampling frequency for precise RMS current and accumulated usage reporting

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Both have internal 4G (3G/2G fallback) plus Ethernet

Dragino DR-CL | Integrated Residual Chlorine Sensor (RS485) Model:Chlorine Measuring Range: 0-2 mg/L • 1 x Milesight WS502The Dragino DR CL is an integrated residual chlorine sensor that measures free (residual) chlorine in water and outputs readings over RS485 (Modbus RTU). It is designed to connect to the Dragino WQS series water quality transmitter (sold separately), which uploads the data to a LoRaWAN, NB IoT or CAT M1 server for remote monitoring. It is available in two measurement ranges DR CL 2ML (0 2 mg L) for low chlorine applications such as drinking water, and