A
Anonymous
Apr 01, 2026
Rating: 5/5
Reliable Sensor
Used this for a conveyor belt counter. No missed counts so far after a week of testing.
Description
Tmall 14-Year Established Store Risym Weixin High-Quality Best Seller
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 3.3V to 5V DC |
| Output Signal | Digital TTL Level |
| Slot Width | 5mm |
| Max Response Frequency | 20kHz |
| Operating Current | 10mA (Typical) |
| Operating Temperature | -20°C to +70°C |
| PCB Dimensions | 35mm x 15mm x 5mm |
| Mounting Hole Size | 3mm Diameter |
| Signal Indicator | Green LED |
| Compatible Platforms | Arduino, STM32, ESP32 |
5 reviews
A
Anonymous
Mar 23, 2026
Rating: 5/5
Perfect for RPM Projects
Works flawlessly with my Arduino Uno. The signal is clean and the LED indicator helps with alignment.
A
Anonymous
Mar 18, 2026
Rating: 5/5
Fast Shipping
Arrived quickly and was well packaged. Tested on a DC motor and readings are consistent.
A
Anonymous
Feb 23, 2026
Rating: 4/5
Good value
Does the job well. Just make sure your interrupter wheel fits the 5mm slot properly.
A
Anonymous
Feb 08, 2026
Rating: 3/5
Needs careful wiring
Works okay but I had to add an external pull-up resistor for stable readings on my 3.3V board.
5 FAQ
Q: Can I use this to count revolutions per minute?
A: Yes, by counting pulses over a specific time period, you can calculate RPM accurately.
Q: Is this compatible with 3.3V logic boards?
A: Yes, the module operates comfortably between 3.3V and 5V DC.
Q: Does it come with mounting screws?
A: No, screws are not included, but the holes are standard 3mm size.
Q: Is the output normally high or low?
A: The output is normally high and goes low when the slot is blocked.
Q: What is the maximum speed this can detect?
A: The response frequency is up to 20kHz, which supports high-speed motor testing.
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