💧 EACHEN Water Leak Sensor — 433MHz RF Wireless (RF-WT)
A wireless 433MHz RF water leak sensor that pairs with any SONOFF RF Bridge or EACHEN RF Bridge to send instant app notifications when water is detected. Place it under sinks, behind toilets, near geysers, washing machines, or anywhere leaks could cause costly damage. Battery powered with ~2-year standby life. No WiFi or Zigbee hub needed — just an RF Bridge.
⚡ Key Features
- Instant Water Detection — contact probes on the underside detect water and trigger a 433MHz RF alarm signal immediately
- 433MHz RF Wireless — long-range RF signal passes through walls better than WiFi or Zigbee; pairs with SONOFF RF Bridge or EACHEN RF Bridge
- eWeLink App Alerts — receive push notifications on your phone when a leak is detected (via RF Bridge)
- Smart Scene Triggers — use the leak detection as a trigger in eWeLink smart scenes to close a smart water valve, sound an alarm, or turn on lights
- ~2-Year Standby Battery — powered by a single 12V 23A battery; ultra-low power consumption in standby
- Compact & Wireless — no wires, no installation; just place on the floor where leaks are most likely
- Works During Load Shedding — if your RF Bridge is on battery backup (e.g. powered from a UPS or gate motor battery), the RF sensor continues to function normally during power outages
- Multiple Sensors Per Bridge — pair several RF-WT sensors to a single RF Bridge to cover your entire home
🏠 Perfect For
Under the Kitchen Sink
Slow drips from waste pipes or flexi-hose connections cause hidden rot and mould. Place the sensor on the cabinet floor — get alerted before the damage spreads.
Near the Geyser
Geyser burst is one of the most common — and expensive — home insurance claims in SA. An RF-WT sensor below the geyser drip tray gives you early warning before it becomes a flood.
Behind the Washing Machine
Washing machine hoses fail silently. Place the sensor behind the machine where the inlet hoses connect to the wall valve.
Pool Pump Room
Detect leaks from filter connections, pump seals, or cracked pipes before they waste thousands of litres of water.
🔀 RF vs Zigbee Water Leak Sensors
This RF-WT sensor uses 433MHz RF and needs an RF Bridge. If you'd prefer a Zigbee water leak sensor with a 5-year battery, mesh networking, and no RF Bridge requirement, consider the SONOFF SNZB-05P (requires a Zigbee hub instead). The Tuya Zigbee Water Leak Sensor is another Zigbee option.
📋 Technical Specifications
| Product | EACHEN Water Leak Sensor (RF-WT) |
| Model | RF-WT |
| Protocol | 433MHz RF |
| Battery | 12V 23A × 1 (NOT included) |
| Standby Life | ~2 years |
| Weight | ~50g (without battery) |
| Requires | SONOFF RF Bridge (R2) or EACHEN RF Bridge |
| App | eWeLink (via RF Bridge) |
| Smart Scenes | Trigger actions when water detected |
| Voice Control | Via eWeLink scenes (Alexa / Google) |
🔗 Related Products
SONOFF SNZB-05P Water Leak Sensor
Zigbee 3.0 water leak sensor with 0.5mm sensitivity, cable expansion port, and 5-year battery. Requires Zigbee hub.
View Product →SONOFF Smart Water Valve (SWV)
Motorised Zigbee water valve. Pair with a leak sensor to automatically close the water supply when a leak is detected.
View Product →❓ Frequently Asked Questions
Does this connect directly to WiFi?
What battery does it use?
Can I use multiple sensors with one RF Bridge?
Does it work during load shedding?
How is this different from the SONOFF SNZB-05P?
🤝 Need Help? We're Here for You!
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8 Wildebraam Street
Weltevreden Park, Roodepoort
Gauteng, 1709
Catch Leaks Before They Catch You 💧
Affordable 433MHz RF water leak protection for your entire home.