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4822 Sterling Court
Boulder, CO, 80301


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Robotic and automation sensors for 1D laser rangefinders (LIDAR), 2D scanning lasers or LIDARs, 3D time-of-flight cameras, digital compasses, programmable USB hub, programmable ethernet controlled relays, programmable USB controlled relays.

Devantech SRF01 Sonar Ranging Module

Devantech SRF01 Sonar Ranging Module R322.jpg
Devantech SRF01 Sonar Ranging Module R322.jpg

Devantech SRF01 Sonar Ranging Module


by Devantech Ltd (Robot Electronics)

World's smallest single transducer range finder, the SRF01 employs Devantech's 2nd generation AutoTune technology which allows ranging all the way down to zero. 

SKU# R322-SRF01

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The SRF01 is a single transducer ultrasonic rangefinder with an extremely small footprint. Connection is to a single pin serial interface. The serial interface is a standard TTL level UART format of 1 start, 1 stop and no parity bits. Baud rate at power-up is always 9600, there is a command to change this to 19200 or 38400 baud if preferred. Up to 16 SRF01's can be connected together on a single bus. Like all our rangefinders, the SRF01 can measure in cm or inches.

3-pin JST connector, three wires and grommet are all included with this sensor.  


Power3.3V to 12V (recommend 5.5V max), 25mA ranging, 11mA standby, 55uA in sleep mode

Range Industrial Spec18cm to 600cm (no calibration required)

Range Hobby Spec0cm to 600cm (after auto-calibration)


Communication One pin serial bus @ 9600 baud, with up to 16 units connected to a single pin on the host computer

UnitsRange reported in centimeters or inches

Weight2.7 grams


Technical Documentation