Fire-Lite W-SD355T Intelligent wireless photo/heat detector. ARLEI The B920 shows two-line system

The B920 shows two-line system messages for all areas

Two position

addressable photoelectric smoke detector designed for use with Desigo Fire Safety and FireFinder XLS/V series control panels

— SIGA-TCDR Temporal Pattern Generator

which is used to cover the "mounting ears" on the base

Fire-Lite W-SD355T Intelligent wireless photo/heat detector. ARLEI The B920 shows two-line systemW SD355 and W SD355T addressable, wireless photoelectric detectors use a state of the art photoelectric sensing chamber to provide open area protection. The W SD355T adds thermal sensorsthat will alarm at a fixed temperature of 135F (57C). The W SD355 and W SD355T communicate with the fire alarm control panel (FACP) through a wireless mesh network to the W GATE wireless gateway. Note: Must be used with an ES 200X, ES 50X, MS 9600(UD)LS or MS 9200UDLS