If you're looking for a flood safety solution, but the idea of cutting pipes gives you chills, the Shelly Neo (NAS-WV02W) is exactly the piece of infrastructure you've been missing. It is a smart servomotor that mounts over your existing ball valve, turning manual control into a fully automated one.
Based on the new Shelly-C38F chipset, this device brings next-gen processing power to the water security zone.
🏗️ Hardware and Mounting: Power in a Compact Format
-
Retrofit System: Clamps onto the pipe and operates the ball valve handle (standard 1/2", 3/4", 1", 1.25").
-
Motor Torque: Provides a force of 30-60 kgf.cm, enough to turn medium-sized valves effortlessly. ⚙️
-
Operating Time: Fully closes or opens the water in 5-10 seconds.
-
Emergency Button: Features a physical button for immediate manual control, plus a gear release ring in case of a power outage. ✋
🔧 Power and Sensors: What Makes it Special?
-
12V / 1A Power: Comes with DC adapter included.
-
Flood Sensor Input: Features a 3.5mm jack port for connecting a wired flood sensor. 🔌🌊
-
Admin Note: This means you can have an instantaneous, local hardware reaction, without depending on Wi-Fi or the cloud to shut off the water if a leak is detected right next to the valve.
-
Connectivity: 2.4GHz Wi-Fi and Bluetooth for error-free provisioning.
🧠 Software: Shelly Gen3 Power Under the Hood 🤓
-
Full Local Control: Supports MQTT, Webhooks, and scripting (mjS). Write complex logic directly on the device. 🛡️💻
-
Maintenance Schedules: Program automatic self-cleaning cycles (short close/open) to prevent the valve from seizing due to limescale.
-
Real-time Status: Reports whether the valve is open or closed, giving you visual certainty in the app.
🛠️ Integration Scenario: "The Hardware Override"
Setup: Shelly Neo on the main valve + wired sensor connected to the jack port + wireless Shelly Flood sensors in the rest of the house.
-
Case A (Local): The wired sensor detects water at the pipe base. The valve closes instantly via direct connection.
-
Case B (Network): A wireless sensor in the bathroom detects water. Home Assistant sends the command to the Shelly Neo via the local network (UDP/CoAP). ⏱️🚫
-
Result: Multi-level protection with hardware redundancy.
✅ Verdict: Is it Worth Installing?
The Shelly Neo (NAS-WV02W) is a robust and extremely flexible solution. The fact that it allows a flood sensor to be wired directly into it gives it a level of reliability that few other Wi-Fi devices possess.
Reviews