EM300-SLD Spot Leak Detection Sensor
EM300-SLD Spot Leak Detection Sensor
EM300-SLD Spot Leak Detection Sensor
EM300-SLD Spot Leak Detection Sensor

EM300-SLD Spot Leak Detection Sensor


Regular price $115.00
Shipping calculated at checkout.

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

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


  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

IP67 Waterproof

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



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)