RCWL-1670 Waterproof Transceiver Split Ultrasonic Ranging Module 2cm-400cm Distance DC 3-5V For Water Level Measurement Description RCWL-1670 is a waterproof,
APDS-9900 Digital Proximity Ambient Light Sensor Module The APDS-9900 provides digital ambient brightness and proximity sensors (ALS), infrared LEDs, and