Using high-quality materials, the quality is guaranteed Typical applications: outdoor robot obstacle avoidance, liquid level, water level measurement, trash can detection, other ranging applications, etc. The module has waterproof and dustproof function, suitable for wet and harsh measurement occasions The module's ultra-low standby power consumption is suitable for battery applications. RCWL-1670 is a waterproof, transceiver split ultrasonic ranging module. 2cm-400cm ranging range, 3-5V wide voltage operation, 1.5uA 3.3V/3.5uA 5V ultra-low standby power consumption. The module includes a transceiver split waterproof ultrasonic sensor and a control circuit. The external control software is compatible with the -SR04 module. Working voltage: 3-5V Working current: 6mA Standby current: 3.5uA 5V 1.5uA 3.3V Software compatible with: -SR04 2CM blind area, 4M typical maximum distance 50mS measurement period Colour:As Shown Material:PCB Package Contents: 2 x Range Finder Modules Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.