D298S BOSCH Four-Wire Addressable Detector Base 24VDC - DISCONTINUED

The D298M Master Detector Base and the D298S Detector Base are used with smoke and heat detector heads to provide early warning fire detection for life safety and property protection systems. The D298M and D298S are 24 VDC bases for use in systems controlled by either:

• a D7412G (or newer) or D9412G (or newer) control panel with a D8125 POPEX Module and 24 VDC auxiliary power supply, or
• a D9124 Fire Alarm Control Panel (FACP)

The D298M provides individual addresses on the FACP data expansion circuit and accepts the D285/D285TH Photoelectric Smoke Detector Heads, the D286 Ionization Smoke Detector Head, or the D603, D604, and D605 Heat Detector Heads. It connects to the D263 Photoelectric Smoke Detector or the D263TH Photoelectric Smoke Detector with fixed‑temperature (135°F [57°C]) heat sensor. It also acts as the master in a slave circuit consisting of up to 19 D287 or D288 Two-wire Detector Bases with D285/D285TH Photoelectric Smoke Detector Heads, D286 Ionization Smoke Detector Heads, or D603, D604, or D605 Heat Detector Heads. The D298M needs a 3 kΩ end‑of‑line resistor (P/N: F01U008725) to complete the circuit and provide supervision.

D298S Specifications PDF

D298S Manual