Milesight EM300-SLD LoRaWAN® Spot Water Leakage, Temperature & Humidity Sensor (EU868)

Milesight EM300-SLD LoRaWAN® Spot Water Leakage, Temperature & Humidity Sensor (EU868)

• IP67 Rated and UV Resistance
• Probe & Rope Type Available
• Conductive Liquids Leak Detection
• Embedded Temperature & Humidity Sensors
• Customized Alarm Reporting Interval/Times
• Up to 10 Years Battery Life

VAT Exemption for EU Businesses: Validate Your VAT Number at Cart Page

Prices do not include VAT (Your local VAT & Shipping Cost will be calculated at Checkout)

€63,00 €69,00
In stock
Product type:

Product Description

The Milesight EM300-SLD is a highly efficient and compact spot leakage detection sensor designed for detecting the presence of water or other liquids and transmitting alarms using LoRaWAN® technology. This sensor is ideal for applications such as pipe leakage monitoring, basement flooding, pump failure, and more, offering a reliable solution for both commercial and residential settings. The EM300-SLD is distinguished by its low power consumption, operating up to 5 years on a 4000mAh battery, ensuring long-lasting performance without frequent battery replacements.

One of the key features of the EM300-SLD is its integration of temperature and humidity sensors, providing an all-encompassing environmental monitoring solution. It boasts an ultra-wide-distance transmission with a line of sight of up to 10km, making it suitable for expansive areas. The device is housed in an IP67 UV-resistant and waterproof enclosure, ensuring durability and reliability in harsh environmental conditions.

In addition to these features, the EM300-SLD can store up to 3,000 historical records locally and supports retransmission to prevent data loss. It also supports the Milesight D2D protocol for ultra-low latency and direct control without gateways. The sensor is equipped with NFC for easy configuration, enhancing user experience. The combination of the Milesight LoRaWAN® gateway and Milesight IoT Cloud solution enables users to manage all sensor data remotely and visually, and to receive alarms via a mobile app.

Product Features

  • Spot Leakage Detection: Detects the presence of water or other liquids based on the conductive principle.
  • Temperature and Humidity Sensors: For comprehensive environmental monitoring.
  • LoRaWAN® Technology: Ensures low power consumption and long-distance transmission.
  • IP67 UV-Resistant and Waterproof Enclosure: Suitable for harsh environment applications.
  • Long Battery Life: Works for more than 5 years with a built-in 4000mAh replaceable battery.
  • Large Data Storage: Stores up to 3,000 historical records locally.
  • Retransmission Support: Helps in preventing data loss.
  • Milesight D2D Protocol Support: Allows for ultra-low latency and direct control without gateways.
  • NFC for Easy Configuration: Simplifies the setup process.
  • Compatibility with LoRaWAN® Gateways and Network Servers: Ensures seamless integration.
  • Remote and Visual Data Management: Via Milesight IoT Cloud solution.
  • Alarm Notifications: Through the mobile app for timely alerts.

The EM300-SLD is a versatile and robust sensor, perfect for a variety of applications requiring reliable leak detection and environmental monitoring.


Product Downloads

Wireless Transmission
Technology LoRaWAN®
Technology EU868
Technology 16 dBm (868 MHz)
Sensitivity -137dBm
Mode OTAA/ABP Class A
Leakage Detection
Trigger Condition When liquid level reaches 5mm
Cable Length 1.5m (Customizable)
Range -30°C to + 70°C
Accuracy 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
Accuracy 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

Shipping Policy

We provide worldwide shipping using reliable tracked
shipping services.

Local Shipments within Cyprus

Shipments in Cyprus are performed usually with ACS Courrier
or AKIS Express. In some cases, we might deliver the products ourselves. A pick-up
option from our locations is also available.

International Shipments

International shipments are performed using Express Airway
Shipping Services. We are currently shipping orders with TNT Express and FedEX.
As soon as your shipment is dispatched you will receive the shipment confirmation
including the shipment tracking number which you can use to track your order
from the shipment provider website.

We dispatch orders within 1-3 workdays after the day of the
order placement. 

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