Spot Water Leak Detector
EM300-SLD
Zone Water Leak Detector
EM300-ZLD
Prevent Water Damage
Through instant water leak detection, the spot/zone water leak detector 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
LoRaWAN®-Based
1Compatible with industry standard LoRaWAN® gateways
2With 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
Flooding monitoring Timely warning
When the water level at the detection point reaches 0.5mm, the flood sensor will report a dangerous situation.
Notify the administrator via email or APP to discover danger in time and reduce losses.
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)
LoRaWAN® Based
- Penetrating Signals: data transmission range up to 2 km in urban areas and 15km in rural areas
- High Compatibility: compliant with standard LoRaWAN® gateways and network servers

Store Capacity with 2800 Sets of Historical Data Records
Data can be stored in the device and cannot be manually deleted, further securing the traceability of the reported information.
Support Retransmission for Reliable Communication
With support for data retransmission,the device guarantees that the web server gets all the data even if the network is down occasionally.
Cloud Data Management
Milesight IoT Cloud
Data Visualization Dashboard:
All figures in a glance
Automatic Triggers:
Interactive collaboration with Milesight IoT sensors to realize scene-based automation
Regular Reports & Real-Time Alerts:
Data-based insights
Android & iOS App:
Manage devices at your fingertips
Applications
Specifications
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) |