They are designed to be used in 12- or 24-volt DC or FWR (full-wave rectified) systems. These products are electrically backward compatible with the previous generation of SpectrAlert notification appliances. Horn/ strobe products are available in two versions. The 2-wire products fit systems where a single NAC controls (horn and strobe).
The 4-wire products are intended for systems that have separate wiring circuits for the horn and strobe. All SpectrAlert Advance products are suitable for use in synchronized systems. The System Sensor MDL module may be used to provide synchronization.
The System Sensor P1224MC can be installed in systems using 12- or 24-volt panels with DC or full-wave rectified (FWR) power supplies. The series can be installed in systems requiring synchronization (module MDL or compatible equivalent required) or systems that do not require synchronization (no module required).
Features / Specifications
- Operational Voltage Ranges: 12V=8-17.5 Volts; 24V=16-33 Volts
- Operational Humidity Range:10-93% RH (non-condensing)
- Flash Rate: 1 flash per second
- Operating Temperature: 32° F to 120° F (0° C to 49° C)
- 12/24 Volt Applications: 15 or 15/75 candela



