Sound Sensor Module
Features
1. A sound sensor module that can act as a microphone. The sensor receives sound waves and converts them into electrical signal, so it can detect the sound intensity in ambient environment.
2. Particularly sensitive to the intensity of ambient sound.
3. High precision, good universality, high cost performance.
4. Working voltage: 3-5V DC; PCB size: 2.0 x 2.0 cm.
5. 3-Pin anti-reverse cable included.
Obstacle Avoidance Sensor Module
Features
1. An Obstacle Avoidance Sensor applies the infrared reflection principle to detect obstacles.
2. The detection distance of IR obstacle avoidance module is 3 ~ 30 cm.
3. Adjustable detection distance (by potentiometer on the module).
4. Working voltage: 3-5V DC; PCB size: 2.0 x 2.0 cm.
5. When there is an object in front which blocks and reflects the infrared light, the infrared receiver will receive signals and the indicator lights up; otherwise it stays off.