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💧 Flow with confidence — precision meets durability in every drop!
The 3/4" Water Flow Sensor is a high-precision hall effect flowmeter designed for fluid measurement between 1-60L/min. Crafted from food-grade, ROHS-compliant plastic, it features a G3/4" male thread for easy installation and a leak-proof sealing ring. Operating on DC 5-24V with ±2% accuracy, it’s ideal for water heaters, coffee machines, purifiers, and smart campus equipment, delivering reliable, durable performance for professional-grade fluid monitoring.
| ASIN | B07MY6LFPH |
| ASIN | B07MY6LFPH |
| Batteries Included? | No |
| Batteries Required? | No |
| Customer Reviews | 4.4 4.4 out of 5 stars (40) |
| Customer reviews | 4.4 4.4 out of 5 stars (40) |
| Date First Available | 1 September 2019 |
| Date First Available | 1 September 2019 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 60 g |
| Item model number | GR-S403 |
| Item model number | GR-S403 |
| Manufacturer | GREDIA |
| Manufacturer | GREDIA |
| Material | Plastic |
| Package Dimensions | 12.9 x 11.3 x 4.1 cm; 60 g |
| Package Dimensions | 12.9 x 11.3 x 4.1 cm; 60 g |
| Part number | GR-S403 |
| Size | G3/4" male thread |
A**E
Seals fine on NPT threads with plenty of teflon tape, at least below 100 psi. If you're operating above that, don't buy Amazon grade sensors. It works down to 3.3v so you can hook it directly to a modern microcontroller such as the ESP32. Calibrate it yourself, though, if you want accuracy.
D**N
Perfect for my DIY water usage monitoring system. Accurate readings, durable build, and easy integration with my Arduino project. Threads were clean and fit standard fittings with no leaks. Will be ordering more
M**K
This flow sensor is very noisy and not accurate above 37l/ minute (10 Gallons/minute). It is 30% off, not really useful. I tried two, they were the same. The noise caused by the sensor impeller at medium to high flow is also very annoying because it is heard through the whole house as it is carried by the piping. Make sure you know what is the flow rate you are going to measure. If it is bellow 7 Gallons/minute you can give it a try. For higher flow rate look elsewhere.
J**O
No me agradó que no incluyera un manual técnico del producto
S**M
The sensor came defective. Does not give output voltage.
Trustpilot
3 weeks ago
1 month ago