... ultrasonic sensors, temperature sensors, ultrasonic servo circuit, display, control signal output, the transmitter circuit as a whole, using SMD chip ... ASC developed ASIC, so that the circuit very compact machine, simple; circuit board all the gold-plated, internal ... - 40 °C ~ 85 °C Display: LED digital tube or LCD backlight display more information Display resolution: d = 1mm/1cm calibrated settings ...