VDO SingleViu 80mm (3-1/8") Tachometer - 5000 RPM [A2C3833000030]SingleViu 80mm (3 1 8") Tachometer 5000 RPM SingleViu instruments represent the latest technology in instruments, and offer a top of the line solution by being able to work directly with traditional analog senders or work directly off a J1939 CAN network. Each SingleViu gauge has it's own microprocessor, which allows it to have a dual input capability that can be switched from it's default analog input to J1939 CAN via the SingleViu Configuration