Discover the Securitron MKS Mortise Key Switch, crafted to enhance security systems with ease. Equipped with a dual-color LED available in 12 or 24V DC, it provides clear visual status. Its backing bracket is designed for seamless compatibility with any 1-1/4 [32 mm] or 1-1/8 [28 mm] mortise cylinder, making installation straightforward (cylinder not included). Additionally, it features an extra switch position that activates a second switch when the key is turned in the opposite direction. Upgrade your security with this reliable and versatile key switch today!