Teknic Euchner Pvt. Ltd manufactures Safety Switches with integrated Bus Interface without guard locking. Teknic Euchner Pvt. Ltd is an ISO 9001 certified company. The safety switch NX-AS1 without guard locking is the counterpart to the safety switch TX-AS1 with guard locking. Both safety switches use the same actuator. In this way, a system can be operated using safety switches with or without guard locking depending on the specific application and requirement.