This electromagnet using DC 5V voltage can work for a long time, is connected with the push rod inhalation; reverse power supply, push rod, when the power off, the rod will be push by its own spring, the spring is small, little thrust.
[Voltage] DC5V
[Current] 200mA
[Power] 1W
[Travel] 6mm
[Length] 100mm
[Weight] 7.5 grams