CAN & alternator speed sensing. Provides full monitoring flexibility. Largest back-lit display in its class Provides clear and easy to read information pages. Ensures the display continues to operate in extreme cold weather conditions. Provides complete user-friendly configuration and easy-to-use high-level system control & monitoring. Provides a true indication of the amount of energy the generator has provided. Model Number: DSE4520 application: crude oil generator fuction: AMF colour:Black Material:metal Package Contents: 4 x 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.