Abstract: Single smoke detector unit with rf radio frequency communication ability, designed to protect a single room or area in a building of smoke hazard conditions. When unit is energized repeatly during false alarm smoke hazard conditions, occupant or user's have the option of resetting unit, by manual switch located on unit, or by hand held transmitter remote control rf radio frequency tuned switch on unit. An intentional time delayed period designed, to avoid smoke detector unit from immediately re-actuating during detecting of smoke hazard conditions.

Abstract: A smoke detector system with radio frequency (rf) communication abilitiy, designed to communicate with smoke detectors in a number of different rooms or areas in the same building, by means of radio frequency (rf)signal. After the false alarm time delayed period ends, when the existence of smoke is detected, all rooms or areas are alerted of the present of smoke in the building and the individual room where smoke was detected is identified by visual signal on that smoke detector unit. The system can be reset, by manual (rf) switch on smoke detectors units or hand held (rf) remote control unit switch. System smoke detectors units used in a single building to protect, are (rf) tuned and codelocked, whereas, they communicate only with smoke detectors units in single building.