This Schmersal 101083036 Interlock Key Beta Etiger AZ 15/16-B1 KPL is a reliable and durable safety relay suitable for indoor use. It is designed to keep your space secure and prevent unauthorized access. The interlock key ensures that the switch cannot be operated without the key, giving you peace of mind. This product is manufactured by Schmersal, a trusted brand in electrical equipment. It has several features that make it an excellent choice for your safety needs. The maximum amperage, current rating, smart home compatibility, and other aspects are all top-notch, ensuring that this product will provide you with the safety and security you need.