Milesight EM300-ZLD LoRaWAN® Zone Water Leak, Temperature & Humidity Sensor - EU 868MHz


:Out Of Stock

Product Features

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


EM300-ZLD is a compact zone leakage detection sensor for detecting large area presence of water (or other liquids) and transmitting alarm using LoRaWAN® technology. With this low power consumption technology, EM300-ZLDcanworkupto5years with 4000 mAh battery. Combining with Milesight LoRaWAN® gateway and Milesight IoT Cloud solution, users can manage all sensor data remotely and visually and receive alarms via mobile APP. EM300-ZLD also integrates temperature and humidity sensors, which has a great use for applications such as pipe leakage monitoring, basement flooding, pump failure, etc.

Key Features

  • Detect the presence of liquids by a long cable and based on the conductive principle
  • Embedded with temperature and humidity sensors for environment monitoring
  • Ultra-wide-distance transmission up to line of sight of 10km
  • IP67 UV-resistant and waterproof enclosure for harsh environment applications
  • Built-in 4000 mAh replaceable battery and works for 5 years without replacement
  • Equipped with NFC for easily configuration
  • Compliant with standard LoRaWAN® gateways and network servers
  • Quick and easy management with Milesight IoT Cloud solution

    Product Specifications

    Wireless Transmission
    Technology LoRaWAN®
    Technology EU868
    Technology 16 dBm (868 MHz)
    Sensitivity -137dBm
    Mode OTAA/ABP Class A
    Leakage Detection
    Trigger Condition Trigger Condition
    Detection Cable 3m (Customizable)
    Range -30°C to + 70°C
    • 0°C to + 70°C (+/- 0.3°C)
    • -30°C to 0°C (+/- 0.6°C)
    Resolution 0.1°C
    Range 0% to 100% RH
    • 10% to 90% RH (+/- 3%)
    • below 10% and above 90% RH (+/- 5%)
    Resolution 0.5% RH
    Power On & Off NFC, Power Button (Internal)
    Configuration NFC Configuration via Mobile App
    Physical Characteristics
    Power Supply 1 × 4000 mAh ER18505 Li-SOCL2 battery (extendable to 2 batteries)
    Battery Life 10 years (10 min interval + 24 triggers per day)
    Operating Temperature -30°C to +70°C
    Relative Humidity 0% to 100% (non-condensing)
    Ingress Protection IP67
    Dimensions 105.6 × 85.3 × 27 mm (4.16 × 3.36 × 1.06 in)
    Installation Wall

      Product Downloads

      Shipping Policy

      We provide worldwide shipping using only tracked shipping services. Currently all our international shipments are performed by TNT Express and FedEx. Local shipments to Cyprus are performed either directly from us or using local shipping couriers (i.e. ACS Courier).

      We ship products within 1-3 days after the order is placed. You will be notified by email when your order is dispatched and you will receive the relevant shipment tracking number which you can use to track your shipment.

      Shipment Tracking

      You can use the following links to track your order using the provided tracking number in the case of international orders.
    • Orders shipped with TNT Express: TNT Tracking
    • Orders shipped with FedEx: FedEX Tracking
    • General Return Policy

      We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

      To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

      To start a return, you can contact us at If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

      For any further information, help and support regarding the shipping and/or return process you can contact us at:

    • Email:
    • Telephone: +357 22 282828