DC20D is one module used for Engine or Generator. It is with the functions of Auto /Stop, and Alarm indication. DC Power and Running situation is indicated on the front panel. The status of the engine and generator can be checked conveniently. Over Frequency, Low Frequency, Over Voltage, Under Voltage, Low Oil Pressure, High Temperature, Low Water Level, Low Oil Level, Failure, Over-time Stop, Emergency Stop Alarm System as well as Low Battery Voltage can be indicated in time. The output adopts relay, which can withstand large output current, and can set system parameters according to the button, so as to meet the application of different. Please note: There may be slight color differences or variations in the actual product, but this does not affect its use. Please do not mind this. Thank you! Color: As Shown Material: ABS Package Contents: 1 x Generator Control Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.