The MSS100-6V BMS High Security Magnetic Contact is a 1″ recessed contact that works well in steel doors where a concealed contact is preferred. The UL Listed magnetic contact has two CC door switches and one OC magnetic tamper switch when magnet is present. There are six color coded wires and an adjustable rare earth magnet. The patented Flair recessed case locks into several gauges of steel doors. Provide your customers more than just a door switch, give them time tested inexpensive Flair high security contacts with built in magnetic tamper.