WS303-915M - MIlesight LoRaWAN AS923/AU915 WS303 Mini Leak Detection IoT Sensor
WS303-915M - MIlesight LoRaWAN AS923/AU915 WS303 Mini Leak Detection IoT Sensor
Features
MIlesight LoRaWAN AS923/AU915 WS303 Mini Leak Detection IoT Sensor
Perfect for smart buildings, smart city deployments or industrial use-cases.
Stop Leaks, Avoid Further Damage, the 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. It's ideal for smart offices, buildings, houses, etc. WS303 will sound an alarm and send a remote alert when water leakage occurs. The WS303 sensor uses water conductivity to detect a minimum water level of 0.5 mm by forming a circuit with two little metal probes. (Other conductive liquids are also supported). Milesight D2D (Device to Device) communication protocol featuring LoRa® enables the communication among different Milesight LoRaWAN® node devices without a LoRaWAN® gateway.
- Immediate Warning Locally and Remotely
- Unique Milesight D2D Communication
- Up to 5 Years Battery Life with One Coin Cell Battery
- Robust IP67 Waterproof Protection
- WS303 includes capacitor storage to trigger a power failure alarm
Specifications
Technical Specifications
| Manufacturer's Code | WS303-915M |
|---|---|
| Frequency | AU915/AS923 |
| Technology | LoRaWAN®, Milesight D2D |
| Tx Power | 16dBm(868 MHz)/20dBm(915 MHz)/19dBm(470 MHz) |
| Sensitivity | -137dBm @ 300bps |
| Mode | OTAA/ABP Class A |
| Liquid Type | Conductive Liquid |
| Trigger Condition | Once Liquid Level Reaches 0.5mm |
| Buzzer | Support |
| Configuration | NFC Configuration via Mobile App |
| Advanced Feature | Milesight D2D Controller |
| Power Supply | 1 × 590mAh CR2450 Lithium Battery |
| Battery Life | up to 5 years (One hour leakage per week, 25°C) |
| Operating Temperature | -10°C to +60°C |
| Relative Humidity | 0% to 100% (Non-condensing) |
| Ingress Protection | IP67 |
| Dimension | 63 × 63 × 14 mm |
| Material & Color | ABS+PC, White |
| Installation | 3M Tape Mounting, Desktop |
Not happy? Return within 7 days of delivery for a full refund or exchange. Items must be unused and in original packaging. Contact contact@kwtech.co.nz to arrange.
| Brand | Milesight |
|---|---|
| Product Type | B2B - IoT & Industrial |
| Weight | 0.5 kg |
Shipping Information
- Free NZ-wide shipping on orders over $299
- Standard delivery 2–5 business days
- Rural delivery may take an additional 1–2 days
- Same-day dispatch for orders placed before 2pm (weekdays)
Returns Policy
- 7-day returns on unused items in original packaging
- Faulty or damaged products covered under warranty
- Contact our support team to initiate a return


