Introducing the Slot Type IR Optocoupler Speed Sensor Module – a versatile, high‑precision optical speed measuring solution designed for hobbyists, engineers, and DIY enthusiasts. Operating seamlessly at 3.3 V‑5 V, this compact counter module integrates effortlessly with 51, AVR, PIC, and other microcontroller platforms, delivering reliable pulse counting and speed detection for a wide range of projects.
Key Highlights
- Universal voltage range: 3.3 V to 5 V for direct connection to most microcontrollers.
- Built‑in IR optocoupler provides non‑contact, dust‑free speed measurement.
- Compatible with 51, AVR, PIC and other popular MCU families.
- Compact slot design fits easily into tight enclosures and prototype boards.
- Integrated counter circuitry simplifies code – just read the pulse count!
- Ideal for DIY kits, robotics, conveyor belts, fan speed control, and more.
Technical Specifications
- Operating Voltage: 3.3 V – 5 V
- Output Signal: Open‑collector TTL compatible
- Counting Range: Up to 65,535 pulses (16‑bit counter)
- Response Time: < 10 µs
- Supply Current: < 5 mA (typical)
- Dimensions: 20 mm × 15 mm × 6 mm (module only)
- Temperature Range: –20 °C to +85 °C
Easy Integration
The module comes with clearly labeled pins for VCC, GND, OUT, and RESET, allowing quick wiring to your development board. No additional components are required – just connect power, ground, and the output to a digital input, and start counting.
Typical Applications
- Rotational speed monitoring for motors and fans
- Conveyor belt velocity measurement
- DIY robotics and autonomous vehicle projects
- Industrial equipment diagnostics
- Educational kits for learning pulse counting and sensor interfacing
Why Choose This Module?
Designed with reliability and simplicity in mind, the Slot Type IR Optocoupler Speed Sensor Module offers precise, non‑contact speed detection without the wear and tear of mechanical encoders. Its broad voltage compatibility and ready‑made counter logic reduce development time, letting you focus on innovation rather than hardware hassles.
Upgrade your next project with a fast, accurate, and easy‑to‑use optical speed sensor – order now and experience the convenience of plug‑and‑play speed measurement!
Price: Original price was: $ 1.51.$ 1.03Current price is: $ 1.03.

