Ultrasonic Ranging Sensor IP67 Waterproof UART 3-450cm for Measure the Water Level for Arduino Raspberry Pi SQ This ultrasonic ranging sensor is a non-contact distance measurement module with stable performance and high ranging accuracy featuring much smaller blind zone, wider sensing angle and a certain penetration power compared with other similar sensors._x000D_ It can detect the distance between the ultrasonic wave and the target. Widely used in robot obstacle avoidance, parking management system, automatic control and so on._x000D_ _x000D_ Average Current:Less than 8mA_x000D_ Response Time:100ms_x000D_ Detecting Range(Flat object):3-450cm_x000D_ Operating Temperature:-15-60_x000D_ Reference Angle:60_x000D_ Waterproof Grade:IP67_x000D_ Measurement accuracy:(1 + S*0.3%)_x000D_ Type:UART serial port_x000D_ Colour:Black_x000D_ Material:Plastic_x000D_ _x000D_ Package Contents:_x000D_ 1 * Ultrasonic Ranging Sensor_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_