Device identification
Device type: Smart water valve
Device model: NAS-WV02W
Main features
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Drinking-water certified brass valve (NSF).
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Ultrasonic measurement system - non-mechanical sensors detect flow rate, pressure, and temperature with high precision and no moving parts.
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Real-time monitoring & consumption tracking - view live flow rate, water temperature, pressure, and total water consumption directly in the Shelly Smart Control app.
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Fast Open/Close operation for responsive shut-off and water supply control.
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Reliable & precisе measurement - temperature accuracy ± 0.5 °C, pressure accuracy ± 1 kPa, and flow-volume precision ± 0.1 gal (0.38 l).
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Wi-Fi and Bluetooth connectivity - No hub required.
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Local web interface for direct device access.
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Standard G 1-1/4 BSPP thread with DN25 (G1 R) adapter included in the packaging.
Connectivity
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Wi-Fi
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Bluetooth
User interface
Manual control
| Action | How to |
|---|---|
| Open the valve | Press the Water on/off button. The indicator light turns green. |
| Close the valve | Press the Water on/off button. The indicator light turns red. |
| AP and Bluetooth reactivation | Press and hold the Connection button until the indicator light start to flash slowly. This operation reactivates AP and Bluetooth connection. After the device is re-connected, the indicator light becomes permanent. |
LED indicators' signals
| Device state | Indicator status |
|---|---|
| Awaiting connection | The Connection button’s light flashes once every 2 seconds |
| Connected | The Connection button’s light is steady |
| Opened | Water ON/OFF indicator’s light is green |
| Closed | Water ON/OFF indicator’s light is red |
| Network reset | Press and hold the Connection button until the indicator light start flashing |
Specifications
| Parameter | Value |
|---|---|
| Power supply | DC 5V / 2 A |
| Maximum working current | 800 mA |
| Standby power consumption | 0.3 W |
| Valve on/off time | 12 seconds |
| Valve diameter | DN25 / 1 inch pipe |
| Water temperature detection range | −10°C to 65°C (14°F ~ 149°F) |
| Water temperature detection accuracy | ±0.5°C (±0.9°F) |
| Water pressure range | 0 ~ 200 psi (0 ~ 1378.95 KPa) |
| Water pressure detection accuracy | ±1 kPa |
| Accuracy of water flow detection | 0.1gal (0.38l) |
| Wireless frequency | 2.41 to 2.48 GHz / 5.18 to 5.85 GHz |
| Wireless standard | IEEE802.11 a/b/g/n, IEEE802.11 a/11n/11ac |
| Bluetooth version | Bluetooth 5.0 |
| Working temperature | 1°C to 65°C (34°F to 149°F) |
| Working humidity | 1% to 95% RH |
| Thread type | G1-1/4 BSPP thread; DN25 G1 R adapter included in the packaging |
| Ingress protection | IPX7 |
| Size (L x W x H) | 195 × 78 × 102 mm / 7.7 × 3.1 × 4 in |
Shelly Smart Control app
Adding the device to shelly Smart Control
Shelly Web user interface
Compliance
NEO smart water valve multilingual EU declaration of conformity.pdf
Printed user guide
User guide Neo water valve EN DE.pdf
Installation guide
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Wrap the connector with sealing tape.
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Attach the connector to the main water supply line.
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Tighten the connector with the hex keys.
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Wrap water valve copper pipe with sealing tape.
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Put the spacer into the connector, and then dock the water valve copper pipe.
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Tighten the adapter nuts with the wrench.
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Repeat the steps for the other valve's end.
Connecting the power supply
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Check the power supply interface slot.
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Align at the interface and press tightly.
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Tighten the nut by rotating it clockwise.
Frequently asked questions
Q: Why does the water valve show a pressure reading of 1 bar even when nothing is connected and no water pressure is applied?
A: Without consumption, the displayed value is the absolute pressure, not the gauge (water) pressure. To find the actual water pressure, subtract the atmospheric pressure from the reading. Since it varies with altitude, use the value that corresponds to your local area.
Q: Can the valve be powered by an alternative power supply?
A: Yes. The device may be connected to a DC 5V, 2A power bank.
Q: Why does the valve's reading reset to zero?
A: At very low consumption levels, when the flow doesn't reach a certain threshold during the measurement interval, it won't register as a change in the reading, and the indication resets to zero.
Q: Is the valve suitable for use with hot water?
A: No, this valve is designed for cold water use only. Higher temperatures may cause inaccurate measurements.
Disposal and recycling
Do not dispose of the product in household waste. Recycle the product to prevent environmental and health damage and to promote resource conservation. Dispose of the product at an appropriate waste collection point at your own responsibility.
Resellers, from which the Device was purchased, are required to accept Waste Electrical and Electronic Equipment (WEEE) free of charge for proper disposal.
Some electronic products may store personal data. The user is responsible for deleting this data before disposing of the Device. For deletion, reset the device to its factory settings.
Manufacturer
NEO Smart Technology (GuangDong) Co. LTD
Address: 7-10/Floor building 28th, Phase III, Le Chuang Cheng Industry Park,
NO.29 LiCheng Industrial Avenue, Shuikou Street, HuiCheng District, HuiZhou
E-mail: support@szneo.com
Importer
Shelly Europe Ltd.
Address: 51 Cherni Vrah Blvd., bldg. 3, fl. 2-3, Sofia 1407, Bulgaria,
Email: support@shelly.cloud
Website: https://www.shelly.com
