Fermion: URM37 Ultrasonic Sensor (2～800cm) Brand_C4 Labs is available at the FIDO

is available at the FIDO Alliance site

Maximum output is around 5W which is good for most smart phones

it won't work without a battery

This switching regulator is efficient and small and works with US (110V) and European (220V) power

The position and the speed of each channel can be controlled separately

Fermion: URM37 Ultrasonic Sensor (2～800cm) Brand_C4 Labs is available at the FIDOURM37 V5. 0 is a powerful ultrasonic sensor mudule with bulit in temperature compensation to ensure accurate distance measurement in the scene of temperature changing applications. It has rich interface and offers various output: analog output, switch, serial (TTL and RS232 level optional), PWM and so on. With analog mode, the sensor outputs voltage which is proportional with distance, it can be connected to Arduino, Raspberry Pi and