EM300-SLD Spot Leak Detection Sensor

EM300-SLD Spot Leak Detection Sensor

Spot Leak Detection Sensor


  • Liquid Leak Detection
  • Probe & Rope Type
  • IP67 Waterproof
  • LoRaWAN® Wireless
  • 5/10 Years Battery Life
  • NFC for Configuring



Spot Leak Detection Sensor EM300-MCS Magnetic Contact Switch EM300-MCS Magnetic Contact Switch

Prevent Water Damage

Through instant water leak detection, the EM300-SLD/ZLD will help prevent potential water damage to properties or assets.

Temperature & Humidity Monitoring

  • -30°C to 70°C
  • 0% to 100% RH

Adopts Sensirion industrial-grade digital sensor, providing ±0.3℃ high accuracy of temperature and ±3% RH of humidity

    IP67 Waterproof

    Equipped with IP67 rated enclosure to fit into more application scenarios
    Dustproof and Waterproof
    Industrial Grade Design



      1. Compatible with industry standard LoRaWAN® gateways
      2. With a range of up to 15 km in rural areas and 2 km in urban areas

      EM300-SLD Spot Leak Detection Sensor


      Ultra Low Power Consumption

      Easily replaceable battery with up to 10 years service life

      • ER18505 4000 mAh Li-SOCl2 Battery
      • Dual Battery Holders (One Battery by Default)



      Easy to Use
      Switching on/off and configuring the device via NFC technology from mobile phone or PC

      1st Step
      Install the Milesight ToolBox (Android/iOS).

      2st Step
      Enable NFC and run ToolBox,
      attach your phone to the device.

      3st Step
      Verify the password and start configuring.

      Milesight IoT Cloud

      • Preventing potential water damage to properties or assets
      • Remote monitoring of temperature and humidity with a phone
      • Collaborative interaction with a variety of Milesight sensors
      • Android & iOS versions allow you to manage devices at your fingertips


      Research Laboratory / Archive / Base Station / Warehouse / Engine Room / Equipment Cabinet / Cold chain Logistics / The Mall / Workshop

        LoRaWAN® Frequency CN470/RU864/IN865/EU868/US915/AU915/KR920/AS923
        Tx Power 17dBm (470) / 16dBm (868) / 20dBm (915)
        Sensitivity -137dBm @300bps
        Mode OTAA/ABP Class A
        Leak Detection Type EM300-SLD: probe, spot detection
        EM300-ZLD: rope, zone detection
        Cable Length EM300-SLD: 1.5 m
        EM300-ZLD: 3 m
        (Optional cable lengths of hundred meters available)
        Temperature Measuring Range -30°C to+70°C
        Accuracy 0~70°C: ±0.3°C
        -30~0°C: ±0.6°C
        Resolution 0.1°C
        Humidity Measuring Range 0%~100% RH
        Accuracy ±3% (10~90%RH)
        ±5% (Other ranges)
        Resolution 0.10%
        Physical Characteristics Power Supply ER18505 Li-SOCl2 4000 mAh (8000 mAh optional)
        Battery Life ≧ 5 years ( for 1 battery)
        Operating Temperature -30°C to 70°C
        Ingress Protection IP67
        Dimension 88 × 87 × 27 mm
        Mounting Wall (screws or 3M adhesives)