The SRF02 is a single transducer ultrasonic rangefinder in a small footprint PCB. This Devantech ultrasonic sonar ranging module has I2C and Serial interfaces with a range of 16 cm to 6 m (about 6 inches to 19 feet)

Acroname MTM-IO-Serial module features adjustable rail GPIO ports, high current drivers, software controlled USB 2.0 hub and serial UART ports, all controlled by BrainStem technology.

Acroname MTM-IO-Serial module features adjustable rail GPIO ports, high current drivers, software controlled USB 2.0 hub and serial UART ports, all controlled by BrainStem technology.