System Sensor B116LP 2-Wire Low-Profile Plug-In Detector Base
Overview
The System Sensor B116LP is a 2-wire, low-profile plug-in detector base rated for 24VDC operation. It provides the mounting and signaling interface between System Sensor ionization smoke detectors and 2-wire fire alarm control panels. The plug-in architecture means detector heads swap without rewiring the base — a practical advantage in retrofit or maintenance scenarios where downtime matters. The low-profile form factor fits standard electrical boxes and minimizes ceiling clutter in occupied spaces.
Compatibility
The B116LP base is engineered for System Sensor 400 Series ionization smoke detectors, including models 1400 (2-wire), 1412B (4-wire), and 1424 (4-wire). It integrates into conventional 2-wire fire alarm control panels. The twist-on mounting bracket with tamper option supports ceiling or wall installation in commercial, institutional, and industrial environments. Verify your control panel's 2-wire protocol and voltage requirements before procurement — 24VDC sourcing must be confirmed on your panel's output module.
Installation Notes
Wiring connections use SEMS screws — no special crimps or connectors required. The removable cover and insect screen enable field cleaning without tools, reducing nuisance alarms from dust accumulation. System Sensor specifies a 3-year manufacturer warranty on the base assembly. Sensitivity metering is supported for NFPA 72 compliance verification. Consult the 400 Series datasheet and your control panel's installation guide for exact circuit wiring and supervision requirements.
