Conventional fire fighting control panel with 4 zones and 3 sound output, designed to connect with 2/4 wired smoke detector, heat detector, manual call point, manual release, gas release lamp etc. 1. Specifications a. Four Style B (Class B) Initiating Device Circuits (IDCs). b. All zones accept two-wire smoke detectors and any normally-open contact devices. c. One built-in Fire Fighting Ouput. d. 24-volt operation. e. Resettable four-wire smoke detector power @ 500 mA. f. Non-resettable power @ 500 mA. g. One-man walk-test programmable for silent or audible test. h. Disable/Enable control per IDC. i. Reverse polarity protection.