System Sensor B224RB-IV Intelligent Relay Base (Ivory)

The System Sensor B224RB-IV is an ivory plug-in relay base for Select Series intelligent addressable detector heads, adding one Form C latching relay contact for auxiliary control such as door closure or elevator recall. It supports selectable short-delay (60 to 100 ms) or long-delay (6 to 10 sec) relay operation and uses a mounting plate that fits common junction box sizes for clean installs. Key Specifications: Type: Intelligent plug-in relay detector base (Select Series, ivory) Core Function(s): Provides one Form C latching relay contact for auxiliary control from an intelligent detector location Loop/Protocol: Used with compatible intelligent addressable plug-in detector heads on supported addressable SLC systems Power: 15 to 32 VDC; 170 uA standby Relay: 1 Form C contact, 2-coil latching; selectable delay: 60 to 100 ms (short) or 6 to 10 sec (long) Indicators/UI: Tamper-resist feature helps prevent detector removal without a tool Mounting: Mounting plate fits 4-inch square (with or without plaster ring), 4-inch octagon, 3.5-inch octagon, single-gang, and double-gang junction boxes Wiring: 18 AWG to 12 AWG System Compatibility: Used with compatible Select Series intelligent addressable plug-in detector heads that mount to the B224RB-IV base on supported addressable SLC systems. NOTE: Ivory (-IV) bases are suitable for use with FlashScan/Velociti/LiteSpeed, and CLIP communications protocols.