O-WM-2 Water Flow Meter
User Manual
O-WM-2 Water Flow Meter
WARRANTY
Rostom provide one-year worry-free warranty. For any warranty claims within one year from the original order date, please email your order ID to Restmo Support and we will respond within 24 hours.
support@restmo-link.com
Scan the QR code or search RESTMO on YouTube to view the set-up instructions video.
https://www.youtube.com/channel/UCuTuBhC5a6zUxbPQMri2j_Q
WARNINGS
- Filter can prevent water leakage and dirt’s damage. Clean filter regularly and replace if worn.
- Only use with clear cold water.
- When expecting freezing temperatures, device should be removed from the hose/faucet and stored indoors to avoid potential freeze damage.
SPECIFICATIONS
| Inlet Thread | 3/4” NH Female (pure brass) |
| Outlet Thread | 3/4” NH Male |
| Water Flow Rate | 0.3~12 GPM (1~45.5 L/min) |
| Max Water Consumption | 99999 Gal (99999 L) |
| Working Pressure | 8~145 psi (0.5~10 bar) |
| Waterproof Grade | IPX6 |
| Measurement Tolerance | ± 5% |
| Battery | 1x CR2032 (included) |
FEATURES
- Pure brass inlet connection
- Compact design
- Simple installation & operation
- Easy-to-read LCD screen
- Switchable unit (gallon/liter)
- Low battery indication
- 4 modes of water flow measurement:
(a) Real-time water flow rate
(b) Last-time water consumption
(c) Daily average water consumption of 7 days (count from next day)
(d) Total water consumption
BATTERY INSTALLATION
Step 1:
Unlock the battery compartment by the included circle platin sheet or a coin.
Step 2:
Insert the included CR2032 battery.
Step 3:
Lock the battery compartment by the included circle platin sheet or a coin.
Note:
- The CR2032 battery is included in the package box.
- Insert the battery with correct direction.
- Remember to lock the battery compartment.
DEVICE INSTALLATION
OPERATION
- Short press the button to change measure modes.
- Long press the button (3secs) at each mode to change setups or reset.
- The LCD screen goes to sleep if there is no operation or water flow within 1min.
FLOW MODE:
Flow mode displays the real-time water flow rate.
Long press the button to switch measurement units from gallon to liter.
CONSUMPTION MODE:
Consumption mode displays the last-time water consumption. Long press the button to reset.
AVG MODE:
AVG mode displays the daily water consumption of the last 7 days. (count from next day) Long press the button to reset.
TROUBLESHOOTING
| Problem | Possible Factors | Solution may help |
| Condensation on the screen | Air condenses inside the screen due to the temperature difference between inside and outside. | The fog disappears when the temperature rises, or leave it stand for a period of time. |
| Water meter is leaking | Filter washer lost or damaged. | Check if filter washer is in place. Check if filter washer is clean and undamaged. Faucet connection is hand tight. |
| Water meter does not count water flow | The counting flywheel does not rotate properly or filter is clogged. |
Stones or dirt block the flywheel. If so, clean the stones or dirt. The flywheel is damaged. Contact customer service for a new replacement. Check if the filter is clogged, if so, clean or replace the filter. |
| LCD screen does not display | Battery is dead or is not installed properly. | Replace with a new CR2032 battery. Make sure the battery compartment is clean and battery is installed with correct direction. Tightly screw the battery cap. |
| Water meter does not count correctly | Water meter counting has ±5% tolerance. | Here are tips to test the counting performance: Make sure the counting unit (liter/gallon) is correct. Must install a garden hose on the outlet and make sure the water flow is 0.6GPM (2.5LPM) at least. |
| Display always automatically resets to zero | Consumption mode counts the last-time water usage and always resets to zero automatically after water flow stops more than 1 minute. |
To count continuous water usage, switch to total mode. Total mode will not automatically reset to zero unless you manually reset. |
Garden Watering Made Easy
support@restmo-link.com
Documents / Resources
 |
RESTMO O-WM-2 Water Flow Meter [pdf] User Manual O-WM-2, O-WM-2 Water Flow Meter, Water Flow Meter, Flow Meter, Meter |