Milesight EM300-MLD LoRa Leak Detection Sensor


Unlike rope or spot leak sensors, the EM300-MLD Membrane Leakage Detection Sensor offers a 40cm x 40cm membrane, enabling it to cover broader areas and effectively detect water leakage.

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The Milesight EM300-MLD LoRa leak detection sensor is a revolutionary device designed to safeguard your property against the costly and damaging effects of water leaks. This smart device features a flexible membrane enabling you to cover a wider area than rope or spot leak sensors.

Utilising LoRaWAN® technology, the Milesight EM300-MLD swiftly detects even the smallest signs of water intrusion. Its high-precision sensors can identify leaks at their inception, preventing potential damages before they escalate.

Example use cases for this LoRa leak detection sensor include:

  • Water Heaters
  • HVAC systems
  • Washing Machines
  • Refrigerators
  • Server Rooms
  • Dishwashers
  • Boiler Rooms
  • Commercial & Residential properties
  • High rise buildings
  • Wrap around pipes
  • Substrate flooring
  • & much more!

Upon detecting any moisture or leaks, this sensor will immediately send alerts via a connected system or directly to designated personnel. These alerts can then be used to take proper counter measures to reduce any damages and safeguard your important assets.

The Milesight EM300-MLD LoRa leak detector is supplied with a 40cm x 40cm membrane as standard. The mat can be trimmed vertically to suit your application. For those looking to monitor a larger area, custom mats can be provided. Speak with a member for more information.

This smart device transmits recorded data to a connected LoRaWAN® gateway. The data is then sent to the smartphone app and/or your chosen third-party platform for visualisation by a LoRaWAN® network server.


  • Supplied with a 40cm x 40cm membrane
  • Available in a range of LoRaWAN® frequencies
  • Custom mats are available
  • IP67 rated
  • LoRaWAN® Certified device
  • Stores up to 1000 historical records
  • Compatible with the Milesight Cloud
  • Supports Milesight’s LoRa D2D protocol to enable ultra-low latency and directly control without LoRaWAN® gateway
  • Up to 10 years battery life


Sensor Dimensions 105.6 x 85.3 x 27mm
Membrane Mat Dimensions 400 x 400 x 0.25mm
Operating temperature -30°C to 70°C
Relative Humidity 0% to 95% (non-condensing)
Wireless Technology LoRaWAN®

Key documents & information

Additional information

Dimensions 400 × 400 × 0.25 mm



Environmental Protection

IP67 Rated

Measurements Taken

Power Source




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