Sierra 70000D Matrix Series Smartcraft Tachometer Features Smart Tachometer CANbus driven All 2 gauges receive data from tachometers IP67 waterproof submersible housings with Connector fitted Dry Nitrogen filled to minimize fogging LED dimmable, automotive style backlighting red CANbus connectivity Size 3 Voltage 12 VDC Current Draw 0.15 - 0.20 A Operating Temperature -40C to 85C Ingress Protection IP 67 Bezel O.D. 3.86 Housing O.D. 3.47 Hole Size 3.5 California Residents WARNING Cancer and Repr