Sierra 69994D Matrix Series 40PSI Water Pressure GaugeFeatures: 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 dimmabl, automotive style backlighting (red); CANbus connectivity; Size : 2''; Voltage: 12 VDC; Current Draw: 0.15 - 0.20 A; Operating Temperature: -40C to +85C; Ingress Protection: IP67; Bezel O.D.: 2.35; Housing O.D.: 2.10; Hole Size: 2.1;