Accenta Metal Version 4 Contains: Large metal cased Accenta CPU andLEDRKP with PA and Tamper - up to 4 Accenta RKPs per system. Has 3 part set programs and 4 access codes, (include 2 user, 1 engineer and 1 duress), with chime, service warnings, zone omit, silent set and 8 Event memory. Accepts 7.0 Ah battery. Includes abort 1 amp PSU and NVM protection. Has 5 programmable outputs for Digital communicator. Metal Case.