BOSCH D9127T 27/11 General alarm initiation requires a

General alarm initiation requires a key to activate a keyswitch located behind the pull lever

North American standard 4 in

The LEDs can be latched ON by code command from the panel for an alarm indication

Key tactile feedback

The Edwards EST SIGA-OSHD Intelligent Multisensor Smoke and Heat Detector provides an optical smoke sensor and a rate-of-rise heat sensor with a fixed temperature setting

BOSCH D9127T 27/11 General alarm initiation requires aThe Bosch D9127T POPIT Module (with magnetic tamper switch) provides point identification of initiating devices, and supervises wiring to devices for circuit integrity. For use when there is a need to expand a compatible control panel beyond its standard number of on board initiating zones or points.