Normally closed magnetic contacts with a short 3/4" switch.
Excellent experience with this vendor
82-4750 - 12V 5.0Ah Rechargable Sealed Lead Acid Battery
ELK Sealed Lead Acid Batteries are excellent for the following applications with regard to size, Amp hour rating, and proper terminal connections: battery backup (for Access Control Systems, Fire Alarm Systems, and Security Alarm Systems), emergency lights, lighte...
82-13880 - Recessed Alarm Switch Brown Stubby Switch And Magnet
82-13883 - Recessed Alarm Switch White Stubby Switch And Magnet
27-4830 - Blue RG-59 BNC Compression Connector
BNC type compression connectors are quicker to install and in many cases out perform hex crimp BNC connectors. Use these connectors for home theater, video applications, surveillance and test equipment. Install the MCM compression connectors using the compression ...
MCM Electronics gave me terrific service and great prices. I will cheerfully shop with them again for my electronic needs.