Kidde-Fenwal 27120-0 225°F 24/12 which means that it detects

which means that it detects fire at the earliest possible stage and reliably measures very low to extremely high concentrations of smoke

— GSA-RB4 4-inch Detector Mounting Base /w Relay c/w GSA-TS Trim Skirt

The F220‐B6PM Base and F220‐B6PS Base

Refer to pages 1-5 for a typical T-4002 thermostat wallbox installation in a hollow wall

Kidde-Fenwal 27120-0 225°F 24/12 which means that it detectsDETECT A FIRE (D A F) thermal detectors are UL Listed and FM Approved detection and release devices for use with fire detection systems to activate alarms and extinguishing systems. This Rate Compensated device combines the best features of both fixed temperature and rate of rise detectors.