SKU: WS303-868M
The WS303 is a compact and highly reliable LoRaWAN® mini leak detection sensor that provides early warning of water leaks in tight spaces.
Details Additional Info Data Sheet Manual
Introducing the Milesight WS303, a mini water leak detection sensor that detects the presence of leaks and raises alarms locally and remotely. With low power consumption, it can operate for 5 years on a single battery. The WS303 will sound an alarm and send a remote alert when a water leak, water spillage, or floor wetness occurs.
The WS303 sensor uses water conductivity to detect a minimum water level of 0.5 mm by forming a circuit with two small metal probes. (Other conductive liquids are also supported.)
Suitable for a wide range of applications, including:
| Wireless Transmission | |
|---|---|
| Protocol | LoRaWAN®, Milesight D2D |
| Antenna | Internal Antenna |
| Frequency | EU868 (Other frequencies available on request) |
| Tx Power | 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz) |
| Sensitivity | -137 dBm @ 300 bps |
| Mode | OTAA/ABP Class A |
| Leak Detection Sensor | |
| Liquid Type | Conductive Liquids (Water & Other Conductive Liquids) |
| Trigger Condition | Once Liquid Level Reaches 0.5 mm |
| Probe Type | Gold-Plated Probes with Stainless Steel Screws (Corrosion-Resistant) |
| Software & Features | |
| Alarms | Built-in Buzzer (Local) & LoRaWAN® Uplink (Remote) |
| Power Failure Alert | Capacitor Storage Backup for Power Failure Alarm |
| Configuration | Mobile App via NFC |
| Advanced Features | Milesight D2D Controller, Data Storage & Retransmission, FUOTA |
| Dimensions | 63 × 63 × 14 mm (2.48 × 2.48 × 0.55 in) |
| Weight | 26g (With Battery) |
| Colour & Material | White, ABS & PC (Flame Retardant) |
| Installation | 3M Tape Mounting, Desktop |
| Operating Temperature | -10°C ~ +60°C |
| Relative Humidity | 0% ~ 100% (Non-condensing) |
| Ingress Protection | IP67 |
| Regulatory | CE, FCC, RoHS |
| Power Supply | 1 × 590 mAh CR2450 Replaceable Lithium Battery |
| Battery Life1 | Up to 5 Years (1 Hour Leakage per Week, 25°C) |