Altech Corp. Keyed Interlock Switches 安全传感器开关

"Safety switches with separate keyed actuators provide a failsafe switch function, indicating the position of guarding access points. These are typically used on hard guarding gates, panels and doors. The switches are normally mounted on the fixed frame of the machine. The actuator key mounts on the door. When the door is closed the key is inserted into the switch, closing the normally closed safety contacts."