First of all, let's take a look at the electromagnetic relay. It is a kind of operating hub for the electrical control cabinet and the baler. The electromagnetic relay is generally composed of iron core, coil, armature, contact reed, etc. It has a control system (also called an input loop) and a controlled system (also called an output loop). It is usually used in automatic control circuits. It is an automatic switch and weak current control circuit to control high voltage and strong current working circuits. , And can realize remote control and production automation, the classification method is also different. Therefore, automatic balers will also appear, bringing many outstanding advantages to these new-function balers.