Features: 1. Small size, it has high sensitivity and fast response 2. Good temperature performance, it has high accuracy and high reliability. 3. Using 3144E switch type sensor for stable performance 4. When the sensor senses a magnetic field, the digital output is low and the signal light is on; if no magnetic field is sensed, the digital output is high and the signal is not lit. 5. This effect sensor switch has a power indicator and a signal indicator. 6. Good waveform and strong driving ability 7. It is provided with fixing bolt holes for easy installation and fixing. 8. Can be used for motor speed measurement, position detection, etc. Specification: Condition: 100% Brand New Work Voltage: 3.3-5V Package List: 5 * Effect Sensor Switch Wiring instructions: 1. VCC -power positive 2. GND -power supply negative 3. DO -TTL digital output 4. AO -analog output (different distance output, different voltage) Note: New-style and old-style are shipped randomly