SWV-ZF2E and SWV-ZF2U are smart water valves designed for different regions. They offer the same features, but differ in their inlet and outlet thread specifications.

They are not interchangeable unless your piping system supports both standards.

• SWV-ZF2E: Uses British Standard Pipe (BSP) thread, thread designation G3/4-14, with a 3/4" nominal size. Recommended for use in the UK, Europe, and most regions that adopt BSP standards.
  
• SWV-ZF2U: Uses National Hose (NH) thread, thread designation NH3/4-11.5, with a 3/4" nominal size. Recommended for use in North America.

If the flow rate is below 5L/min, the device will detect it as a "No Water" condition and the valve can be set to automatically shut off after a specified duration.

If this happens frequently, try increasing the water flow.

The flow meter can detect the range of 2~45 L/min. Please keep the water flow rate within this range.

No. Hydro DUO automatically adjusts calculations based on actual flow rate, even under fluctuating water pressure, to ensure accurate irrigation volume tracking.

Yes. You can set the on/off status of the water valve after the device detects water shortage in the settings page.

Reverse installation is not supported. Do not install a faucet on the outlet. Please follow the installation guide and install in the correct direction.

Not recommended. Connecting to drinking water has strict safety requirements for valve materials. Hydro DUO is mainly designed for garden irrigation with tap water.

Yes, all set schedules are stored locally on the device.

Under normal use, the battery life is about 1 year
(test condition: 2 uses per day, 30 minutes each time).

However, if it is used continuously as a flow meter, the battery life will be significantly shortened, to about 1 month.

Note: Batteries are not included with Hydro DUO, so users need to prepare their own. Actual power consumption depends on the battery capacity and usage pattern.

If both channels are turned on at the same time, it will cause a drop in water pressure, leading to unstable water flow from the sprinkler, which affects the irrigation performance. Therefore, the product is designed not to allow simultaneous operation.

The current battery compartment uses a screw-lock design to ensure higher protection levels (waterproof and dustproof). Therefore, it is recommended to tighten the screws after installing the batteries.

The device is equipped with a Type-C port at the bottom, which serves two main purposes:

A. External power supply
The Type-C port can be used to power the device directly. When both external power and batteries are connected, the device will prioritize Type-C power.

B. Solar panel connection
A solar panel with a built-in battery can be connected to provide continuous power, reducing the frequency of battery replacement.

Note:

• When using a Type-C cable, the device’s protection level depends on the cable used. It is recommended to use a silicone waterproof cable to ensure overall waterproof performance.
• When powered via Type-C: voltage range is 4.5–5.5V, current greater than 0.4A. If using a solar panel, it must include a built-in battery.

By default, the indicator light does not illuminate while the device is operating to optimize power consumption. Continuous illumination would significantly increase battery usage and shorten battery life (designed for approximately 12 months). To ensure longer battery life, the indicator light is turned off during operation.

The dual-channel water valve is a dual-mode communication device, supporting Zigbee + proximity communication. Zigbee is used for daily operation, while proximity communication serves as a backup in case there is no gateway or the gateway is too far to maintain a stable connection.

Operating modes:

    A. Proximity mode

• If you do not have a Zigbee gateway, you can connect via proximity to set schedules and manually control the device.

    B. When connected to a Zigbee gateway but the Zigbee connection is unstable:

• When you open the device details page and the device detects an unstable or disconnected Zigbee connection, it will automatically switch to proximity connection.
• If the Zigbee connection appears normal but a setting cannot be saved, you can click the proximity icon in the top-left corner to enter proximity connection mode. The device will connect successfully, allowing control via proximity. To exit proximity mode, click the back button to return to the main APP page; the proximity connection will disconnect. When you re-enter the device details page, the device will prioritize Zigbee connection.