ELING Universal Digital Speedo Odo Gauge GPS Speedometer For Car Motorcycle Truck Yacht Ship 52cm 9-32V Open a hole with a diameter of 52 mm and a depth of 70 mm, insert a meter into it and attach Easy installation – connection of 3 wires (power supply, grounding, lighting). It is a complete unit, can work directly with GPS sensor, no need for other sensor wires. Mount the sensor anywhere, on or pod the dashboard. After connecting the signal for the first time, but less than 3 seconds. It gets faster pod view of the sky. Sometimes in the absence of a signal, we ask for your understanding. Reconnect all wires and uruchom it again. Shows current speed and ODO, press the button on the back to set the unit (KM/H. MPH, node) Red backlight, 9-32 V DC (12 V DC/24 VDC) operating voltage, 100% waterproof and anti-fogging Manufacturer: ELING Manufacturer reference identifier: 810-00171 Product dimensions: 9,65 x 10,16 x 9,65 cm; 225 gr ASIN: B074JCMW3P Items on our listings are from inventory surpluses or consumer returns.