Sierra 70000D Matrix Series Smartcraft TachometerFeatures: 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;