The DITEK-APK1 is an alarm system power and dialer surge protector that is designed for residential alarm system installers. The self resetting products are designed forsystems where the telco ground is.The DITEK-APK1 consists of one 1F AC outlet surge protector that has a unique center screw that allows secure fastening of alarm panel transformers. The kit also contains one MRJ31XSCPWP modular RJ connection that uses standard RJ31X plug connectors and protects the alarm dialer lines. Also known as -Ditek SURGE PROT 1-OUTLET/ RJ31X KIT - DK-APK1