Ultrasonic Ranger SRF01

World beating performance - the SRF01 employs our 2nd generation AutoTune technology which allows ranging all the way down to zero on a single transducer sonar. Voltage - 3.3v to 12v Current - 25mA Ranging. 11mA Standby. 55uA Sleep. Frequency - 40KHz Range - 18cm to 600cm (Industrial spec', no calibration required). Range - 0cm to 600cm (Hobby spec' after auto-calibration). Connection - One Pin Serial Bus @ 9600 baud. Up to 16 SRF01's connected to a single pin on your controller. Units - Range reported in cm or inches. Very light weight, just 2.7gm Supplied with Mounting Grommet.