Description: - GM51H is one light and low price-orientated module used for demonstrating engine RPM,coolant temperature, fuel level,oil pressure, battery voltage and Hours. The users can adjust and set the parameters by the button on the front face in order to meet the different requests. Specification: - Usage:Engine Tachometer - Function:Tachometer Oil Level Pressure Temperature Meter Voltmeter - Input voltage:DC8V----36V Continuous - Operation Temperature:-20~65 - Storage Temperature: -40~85 - Protection: IP54 - Installation size(W * H):91mm*91mm - Weight: 0.2kg Specification Working voltage DC8V----36V Continuous Power consumption Standby: 24V: MAX 1W Working: 24V: MAX 1.5W AC Voltage Input 1P2W 50VAC-280VAC4570Hz Rotate speed sensor Frequency 50-10000Hz(AC365V) MAX Accumulating Time 99999.9HoursMin storage time:6min Relay Output 5AMP Non-contact normal open & normal close output Working condition -25-65 Storage condition -40-85 Protection Level IP54when coolantproof rubber gasket is added between meter and its panel Insulation strength Apply AC2.2kV voltage between high voltage terminal and low voltage terminal; The leakage current is not more than 3mA within 1min. Overall dimension 100mm*100mm*77mm Panel cutout 91mm*91mm Weight 0.15Kg Main Features: *32bit high performance single chip microcomputer. 5 screens *Various kinds of protections. *Input frequency is available to check RPM. *Variety of sensor curves' parameters is set inside and sensor curve can be self-defined *5 kinds of maintenance countdown can be set, and the first maintenance and routine maintenance can be distinguished; *3 analog input channels of sensors, among which the oil pressure sensor is compatible with voltage signal input; *The parameters can be set and adjusted by the button on the front face. *It has high current alarm relay, one normally open and one normally closed output, which is convenient for users to use; *Standard coolant-proof rubber gasket. The coolant proof can reach IP54.