What the Aqara Water Leak Sensor does well
The Aqara Water Leak Sensor offers outstanding value — hard to beat for simple leak detection:
- Low price: €19.99 in Aqara's EU store for an IP67-rated water detector — you can hardly find cheaper.
- Zigbee 3.0: Talks to the Aqara Hub via Zigbee. Multiple sensors can be flexibly placed around the house.
- Apple Home, Alexa, Google Home: Through the Aqara Hub the sensor shows up on other platforms too, and via Matter with a Matter-capable hub (e.g. M100, M3). Push notifications come through the Aqara Home app.
- Hub alarm and automations: Depending on the hub model, the hub plays an alarm sound when water is detected. With the Aqara Valve Controller T1 (€69.99), an automation can close the shut-off valve.
- Compact and battery powered: 50 × 50 × 15 mm; according to Aqara, one CR2032 coin cell lasts over 2 years — no cable, no power connection needed.
Why it falls short in a pump sump
For simple leaks in living spaces, the Aqara is perfect. But in a pump sump, it hits its limits — for several reasons:
- Zigbee hub is mandatory: The Aqara sensor doesn't work on its own — you need an Aqara Hub (from €29.99, e.g. Hub E1 or M100) or a compatible Zigbee hub. That's an additional component that needs power and network, and can itself fail.
- Floor-level detection only: The sensor sits flat on the floor and only detects water when it touches it. It cannot measure a rising water level in a pump sump — it only triggers when water reaches the basement floor.
- Not made for a shaft: IP67 protects against brief submersion, not permanent use in water. And even in a shaft it only reports wet or dry — no level, no pump cycles.
- No push alert during a power cut: The sensor runs on battery and keeps detecting water. But the hub and router need mains power — when they go down, no message reaches your phone and the hub plays no alarm sound. Exactly when your pump has stopped too.
- No pump monitoring: The Aqara cannot detect whether your pump is still running, pumping unusually often, or has been idle for days.
Feature comparison
| Feature | Drainbee | Aqara |
|---|---|---|
| Continuous water level monitoring | ||
| Alert on water contact (floor) | ||
| Submersible probe for shafts | ||
| Works without hub | ||
| Alert during power outage | ||
| Pump cycle & inflow history | ||
| Apple HomeKit support (Aqara via hub) | ||
| Zigbee mesh network | ||
| Cloud dashboard with history | Aqara Home App | |
| Water level threshold alert | ||
| Self-learning thresholds |
When do you need which?
Choose the Aqara Water Leak Sensor if …
- You want to detect leaks under the dishwasher, in the bathroom, or in the laundry room
- You already use a Zigbee system or Apple HomeKit
- You want to place multiple affordable sensors around the house
- You don't have a pump sump or drainage shaft
Choose Drainbee if …
- You want to monitor a pump sump, drainage system, or shaft
- You want to be warned before water reaches the basement
- You want to see in the pump cycle history whether your pump is running
- You want alerts even during power outages — when Drainbee stops reporting because power or WiFi is down, the Drainbee cloud notices and alerts you in the app
- You don't want to set up an additional hub system
Or both: Aqara sensors in the kitchen, bathroom, and laundry room — Drainbee in the pump sump. Both systems work independently and complement each other perfectly.
Verdict
The Aqara Water Leak Sensor is one of the best value propositions on the market for simple leak detection — affordable, compact, and well integrated with Apple Home and others via the Aqara Hub. But for pump sumps and drainage shafts, it's not built: no level sensor, no push alert during power outages, no pump monitoring. Drainbee fills exactly this gap with a submersible probe, standalone app alerts (including on power outage and WiFi loss), and a history of level, pump cycles and inflow. Best approach: combine both systems — Aqara in living spaces, Drainbee in the pump sump.
Frequently asked questions
Is Aqara the same as Xiaomi?
Not quite. Aqara is a brand of Lumi United, based in Shenzhen. Lumi also builds devices for Xiaomi's ecosystem, and Xiaomi holds a stake in the company and is one of its biggest customers. That's why the sensors are often sold as “Xiaomi Aqara”. For your basement the name makes no difference: Aqara or Xiaomi, the sensor detects water on the floor but doesn't measure the level in a pump sump.
Does the Aqara Water Leak Sensor work without a hub?
No. The Aqara Water Leak Sensor communicates via Zigbee and requires an Aqara Hub or compatible Zigbee hub (e.g., Conbee, Home Assistant with Zigbee stick). Aqara hubs start at €29.99 in Aqara's store (Hub E1, Hub M100). Drainbee, by contrast, works completely standalone — you only need WiFi and a power outlet.
Can the Aqara sensor measure the water level in a pump sump?
No. The Aqara Water Leak Sensor only detects whether water is present (wet/dry). It does not measure water levels and is not designed for use in water or shafts. Drainbee continuously measures the water level with a submersible probe and detects rising levels before flooding occurs.
What does the Aqara system cost in total compared to Drainbee?
The Aqara sensor costs €19.99, plus an Aqara Hub from €29.99 — so from about €50 for the total system (prices in Aqara's EU store, as of 10/2026). Drainbee costs €298 one-time with no recurring fees. However, the two products solve different problems: Aqara detects floor leaks, Drainbee monitors pump sumps with level measurement and a pump cycle history.
Does the Aqara sensor alert during power outages?
Only partly. The sensor runs on battery and keeps detecting water during a power cut. But the Aqara Hub and your router need mains power: when they go down, no push notification reaches your phone and the hub can't play an alarm sound — exactly when your basement pump has stopped too. Drainbee has no battery: when power or WiFi drops out, the device stops reporting. The Drainbee cloud notices and alerts you in the app.
Sources
- Aqara: Water Leak Sensor – Product Page (2026) (opens in a new tab)
- Aqara: Water Leak Sensor T1 – User Manual (2023) (opens in a new tab)
- Aqara EU Store: Water Leak Sensor (2026) (opens in a new tab)
- Aqara EU Store: Smart Hub M100 (2026) (opens in a new tab)
- Aqara EU Store: Valve Controller T1 (2026) (opens in a new tab)