The Notifier SFP-2402 and SFP-2402E Fire Alarm Control Panels (FACPs) bring the latest in microprocessor technology to conventional fire controls. The SFP-2402 is compatible with the i³™ smoke detectors from System Sensor with drift compensation, maintenance alert, and freeze warning. Automatic synchronization of audio/visual devices with three selections for manufacturer protocol. The Notification Appliance Circuit (NAC) protocol can silence audible devices while strobes continue to flash, using a single pair of wires. The SFP-2402 is compatible with conventional input devices such as two- and four-wire smoke detectors, pull stations, waterflow devices, tamper switches and other normally-open contact devices. Refer to the Notifier Device Compatibility Document PN 15378 for a complete list of compatible devices. Note: Unless indicated otherwise, the term “SFP-2402” refers to both SFP-2402 and SFP-2402E models.