Safety switch

A safety switch comprising:

• a head having a receiving space for receiving a bolt of an actuator;
• a first attachment portion disposed in the head and having a first attachment hole so that a first attachment member is inserted through the first attachment hole to an external object;
• a wireless detector configured to detect a first state in which the bolt is received in the receiving space by detecting a wireless tag disposed on the actuator;
• a switching device configured to output a signal indicating a safety state based on the first state detected by the detector;
• a lock pin configured to lock the bolt by regulating pull-out of the bolt in the first state;
• a lock driver configured to drive the lock pin to switch, based on an input signal, between a lock state in which the pull-out of the bolt in the first state is regulated and an unlock state in which the pull-out of the bolt in the first state is permitted;
• and
• a casing having an end wall at one end through which the lock pin is inserted when the bolt is locked, and coupled to the head at the end,
• wherein the casing houses the wireless detector, the switching device, and the lock driver, and the casing has a resin side wall facing the wireless detector,
• wherein the first attachment hole is provided at a center position in a transverse direction of the safety switch.