Sonoff Hydro DUO (SWV-ZF2E) smart irrigation water valve, 2 channels, Zigbee, with flow meter
Description
Sonoff Hydro DUO (SWV-ZF2E) – smart 2-channel irrigation water valve with flow meter
The Sonoff Hydro DUO is a Zigbee 3.0 smart water valve for gardens and irrigation, with two independently controlled zones and a built-in flow meter. Each zone has its own schedules: up to 6 schedules per channel (12 in total), by time or by volume, with a time failsafe. Schedules are stored locally and run even without a network, while seasonal adjustment and automatic pause in severe weather help save water.
Note: remote control and automations require a compatible Zigbee gateway, for example SONOFF ZBBridge-U or iHost; without a gateway, the valve works in proximity mode via BLE. The SWV-ZF2E version has a BSP G3/4 (3/4") thread, for Europe. Batteries (4 × AA) are not included; the valve can also be powered via USB-C 5V 1A. Not recommended for drinking water. In freezing conditions it must be removed and drained. The two channels cannot run at the same time. Vertical mounting is recommended, as horizontal mounting increases the flow measurement error.
Features:
- Two independently controlled zones with separate schedules
- Up to 6 schedules per channel (12 in total), by time or by volume, with a time failsafe
- Built-in flow meter, 2–45 L/min, with per-zone consumption history of up to 6 months, downloadable
- Monthly seasonal adjustment and automatic pause in severe weather (third-party weather data for the next 24 hours)
- Low battery, frost, no water and leak alerts; automatic shut-off when there is no water; child lock
- Schedules stored locally that run even without a network
- Brass inlet, anti-slip texture and tool-free quick connection; IP65 protection rating
- Works with eWeLink, Home Assistant and Google Home (via gateway), Apple Home (via Matter Bridge), Amazon Alexa and SmartThings
Practical use cases:
- Garden with lawn and beds: one zone waters the lawn in the morning, the other waters the vegetables in the evening, each on its own schedule.
- Watering by volume: drip irrigation for tomatoes stops after a set number of litres.
- Rainy summer: automatic pause in severe weather and seasonal adjustment reduce watering when it is not needed.
- Holiday home: schedules run locally even without a network, and leak or no-water alerts reach your phone when the valve is connected to a gateway.
Technical specifications:
| Model | SWV-ZF2E (EU version) |
| Wireless protocol | Zigbee 3.0; BLE (proximity mode, no gateway) |
| Channels | 2 (cannot run simultaneously) |
| Thread | BSP G3/4-14 (3/4") |
| Power supply | 3V ⎓ (4 × 1.5V AA, 2S2P, not included) or USB-C 5V 1A |
| Battery life | approx. 1 year (2 waterings per day × 30 min) or approx. 1 month in continuous use as a flow meter |
| Flow meter | 2–45 L/min; below 5 L/min "No Water" is reported |
| Working pressure | 0.06–0.8 MPa |
| Protection rating | IP65 |
| Dimensions | 121 × 132 × 67 mm |
| Operating temperature | 0–50 °C; water temperature 5–40 °C |
| Operating humidity | 5–95% RH, non-condensing |
| Altitude | below 2,000 m |
| Materials | ABS housing, brass inlet |
It is the right choice for anyone who wants to water two garden zones automatically, with separate schedules and measured water consumption.