Zone leak detection via 3.0
Zone leak detection via 3.0 m conductive cable (extendable).

Zone Leak Detection Sensor
The EM300-ZLD is a Zone Leak Detection Sensor. Integrated temperature and humidity sensors provide ambient context at the monitored zone, supporting smarter alarm filtering and HVAC correlation.
Dispatch and lead time are confirmed in the quote.
Manufacturer warranty24 months
Overview
The EM300-ZLD is a compact zone leakage detection sensor for large-area presence of water or other conducting liquids. A long conductive cable detects leaks along floors, membranes and corridors while LoRaWAN carries alarms to central monitoring.
The 3.0 m sensing cable (customisable length) triggers when liquid reaches about 5 mm anywhere along the cable, covering far more area than a single spot probe.
Integrated temperature and humidity sensors provide ambient context at the monitored zone, supporting smarter alarm filtering and HVAC correlation.
A 4000 mAh replaceable battery delivers up to 10 years of service. Historical records are stored locally with retransmission support to prevent data loss.
IP67 housing withstands demanding environments. NFC configuration simplifies commissioning; Milesight D2D allows direct control without a gateway when needed.
Zone leak detection via 3.0 m conductive cable (extendable).
Built-in temperature and humidity sensors.
Trigger at 5 mm liquid level along cable.
IP67 UV-resistant waterproof enclosure.
4000 mAh replaceable battery, up to 10 years.
Local data storage and retransmission.
Milesight D2D and NFC configuration.
1 × 4000 mAh Li-SOCl2 battery (optional second battery).
Technical data
| Specifications | |
|---|---|
| Technology | LoRaWAN® |
| Antenna | Internal antenna |
| Frequency | CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
| Tx Power | 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz) |
| Sensitivity | −137 dBm @300 bps |
| Mode | OTAA/ABP Class A |
| Specifications | |
| Leak Detection | Conductive cable, trigger at ~5 mm liquid level |
| Cable Length | 3.0 m standard (customisable extension) |
| Temperature Range | −30 °C ~ 70 °C |
| Humidity Range | 0 ~ 100% RH |
| Specifications | |
| Power Supply | 1 × 4000 mAh Li-SOCl2 battery (extendable to 2) |
| Battery Life | Up to 10 years (10 min interval + 24 triggers/day) |
| Ingress Protection | IP67 |
| Configuration | NFC, downlink |
No specification rows match the filter.
Applications
Cable runs along server room floors, corridors and plant rooms detect leaks across wide zones with a single sensor.
Conductive cable layouts under membranes or along parapets catch water ingress early in commercial and industrial buildings.
Extended cable options cover long perimeters in warehouses, museums and archives where spot probes are impractical.
Documentation
Questions
Up to 10 years (10 min, according to the specification.
IP67, according to the specification.
–30 … +70 °C, according to the specification.
CN470/IN865/RU864/EU868/US915/, according to the specification.
Request a quote
Tell us the quantity and the delivery country. We reply within one working day with the price, stock at the nearest warehouse and the dispatch date.
Manufacturer warranty24 months
Europe & United Kingdom
Product advice, availability and project enquiries.
All contact details