Feature: 1. This generator controller can measure and display engine speed, oil pressure, water temperature, oil temperature battery voltage. 2. High measurement accuracy ensures a more accurate and convenient control over the engine, which will improve the efficiency. 3. Supports cumulative timing function, also has alarm function to protect the generator from charging failure, high pressure, etc. 4. The RS485 interface on the generator monitor supports communication protocol that makes the control much easier and quicker. 5. Premium material, sturdy structure and IP54 protection grade promises safe working as well as long‑term use, very practical. Specification: Item Type: Generator Controller Module Power Supply: DC8~36V; Power Consumption: Maximum 1.5W; Sensor Resistance: 0~1000 ohms; Rotate Speed Input Signal Frequency Range: 50Hz~10kHz; Rotate Speed Input Signal Amplitude Range: AC 3~65V; Input Power Generation Signal: AC40~280V (45~70Hz); Speed Measurement Accuracy: Error ±1% (within range); Oil Pressure Measurement Accuracy: 0-1000KPA, error ≤±2.5%; Water Temperature Measurement Accuracy: 20-100℃, error ≤ ±2.5%; Oil Temperature Measurement Accuracy: 20-150℃, error ≤±2.5%; Accuracy of Battery Voltage Measurement: Error ≤±1% (within range); Accumulated Time Range: 0-999999 hours; Minimum Recording Time During Accumulation: 0.1 hour; Alarm Output: Relay passive contact output, maximum DC 3A; Using Environment Temperature: -20-65℃; Storage Temperature: -40-85℃; Protection Grade: IP54 (front panel after installation);. Package List: 1 x Generator Controller Module2 x Buckle2 x Module1 x User Manual Note: During the operation of the unit, it is strictly forbidden to disconnect the battery, otherwise it will cause damage to the instrument. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.