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💧 Power your flow, save your energy — switch smart, live smarter!
The Keenso EFS-04P Water Switch is a 220V, 3A magnetic water flow sensor designed for electric water heaters. Featuring a spring-free magnetic repulsion mechanism, it reliably activates heating only when water flows, promoting energy efficiency and reducing scale buildup. Its G1/2" BSP pipe thread ensures easy installation in vertical or horizontal orientations. Lightweight and durable, it comes with a 180-day warranty for trusted performance.
| ASIN | B07TYWF668 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 79,418 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 79 in Flow Sensors |
| Customer Reviews | 3.5 3.5 out of 5 stars (11) |
| Date First Available | 4 July 2019 |
| Item Package Quantity | 1 |
| Item Weight | 20 g |
| Item model number | EFS-04P |
| Manufacturer | Keenso |
| Part number | Keenso29bgawvdof |
| Plug profile | Wall Mount |
| Switch Type | 1-way |
| Wattage | 10 watts |
G**.
excellent & great value
excellent & great value
T**E
Not as specified
I used this device to switch a bathroom extractor fan on. Contacts keep sticking leading to continuous running of the fan. Giving the benefit of doubt I replaced my old fan and bought a replacement switch and got the same result. Contacts can be freed by giving the device body a sharp tap , so the contacts are sticking under load conditions.The switch on current of the fan is around 40mA (far less than the specified I max of 3A) Conclusion not as specified.
N**D
Worked fine to 2 weeks
Worked well for about 2 weeks then it became slow to turn on and off. I was using it on the hot water flow to an under sink heater to turn a pressure booster on and off. This was wired via a relay to ensure the switching current was low.
Trustpilot
3 weeks ago
2 weeks ago