This type of electronic timing relay alows you to activate electromagnets in Direct Current with a double coil one of which is high power for a limited amount of time set by the automatically disconnecting electronic circuit, and one holding coil, which is low power for an indefinite amount of time.
It can be used for any other similar equipment.

Power supply = 12 - 24 VDC
Timing of pickup currents max 70Amp 
100 ED% low current holding
Timing duration= 500 ms