Milesight EM300-ZLD is a smart LoRaWAN® zone leak detection sensor designed to monitor large areas for water or conductive liquid presence and send instant alerts when a leak is detected. It is ideal for protecting critical infrastructure such as basements, pipelines, HVAC systems, and industrial facilities from water damage.
The device uses a sensing cable to detect liquid over a wide area and triggers an alarm when water is detected. In addition to leak detection, it also includes built-in temperature and humidity sensors for environmental monitoring, providing more complete site visibility in a single device.
With LoRaWAN® connectivity, the EM300-ZLD enables long-range wireless communication and easy integration into IoT platforms for remote monitoring and alerts. It supports data storage and retransmission, ensuring reliable data delivery even during temporary network interruptions.
Key Features
- Zone-based water and liquid leak detection (sensing cable)
- Built-in temperature & humidity monitoring
- LoRaWAN® long-range wireless communication
- IP67 waterproof and dustproof design
- Data storage and retransmission support
- Long battery life for multi-year operation
- Suitable for industrial and building protection





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