SRF05 five Pin Ultrasonic ranging module Ultrasonic sensor Specification1. voltage: DC5V2: ... (receiving end), out (empty feet), GND9: Note: TRIP-pin internal pull-up 10K resistor, down TRIP microcontroller IO port ... pin, and then to a 10:us pulse signal.OUT pin for this module as ... the switch output pin when the anti-theft module, ...