These magnets require a power source
When electricity is passed through them they produce a strong magnetic field and when the power is removed, the magnetic field disappears instantly.
Features
Powerful and compact.
smooth and flat Area.
Low consumption and reliable, easy to control.
Installation hole bearing capacity is stronger, the connection port is more secure with insulation
Every electromagnet supplied with approx. 200mm of wire for connecting to a direct current (DC) power source.
Used widely in home appliances,vending machines, game machine,auto door lock,automatic control,etc