DC3-5V RCWL-1670 Waterproof Transceiver Split Ultrasonic Ranging Module /HC-SR04

RCWL-1670 is a waterproof, transceiver split ultrasonic ranging module. RCWL-1670 is a waterproof, transceiver split ultrasonic ranging module. Software compatible with HC-SR04. Module High precision, blind spots (2cm) super close.

eBay