EN – Emergency Power Coil

EN Emergency Power Coil. Should there be an interruption of the main power to the elevator, the emergency lowering coil EN, fed by an emergency 12 V DC  or 24 V DC supply, enables a command to be given from the car or elsewhere to lower the car to the floor below. When ordering  please state main and emergency voltages. Is the main Voltage below 100 V, all emergency coils have 4 wires (black, blue, brown, white).
Is the main Voltage above 100 V, a 5th wire (green-yellow) is added for the ground.