Two-way keep type electromagnet work:

Inside the product have two coils, a control its stretched out, and a control its back, the product can connect two wires, can also pick up three wire, four wires.

Two wires of electricity is the red line is, negative when back to the black line, the red line to negative, when the black line for the pop-up.

Are three wires is red, one black line when back to the cathode, pick up another white thread popup.

Four wire is the red line is, negative when back to the black line, white line is, the yellow line when negative pop-up.

Two-way keep type electromagnet, regardless of what kind of connection is as long as the moment electricity, to power, the electricity can also be in the off position or springs out of position, absolute power consumption is small.