SRF05 five Pin Ultrasonic ranging module Ultrasonic sensor Specification1. voltage: DC5V2: static current: less than 2mA3: level ... and precise measure of distance. And comparable foreign SRF05, SRF02 Ultrasonic Ranging Module. Module precision, blind spots (2cm) super close, stable ... return to a high IO output, high duration of the ultrasonic time from launch to return.Test distance = (time high * ...