EM300-ZLD Zone Leak Detection Sensor
EM300-ZLD Zone Leak Detection Sensor
EM300-ZLD Zone Leak Detection Sensor
EM300-ZLD Zone Leak Detection Sensor

EM300-ZLD Zone Leak Detection Sensor


Regular price $198.00
Shipping calculated at checkout.

Zone 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-ZLD Zone 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

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)