| Show device sounds alarm to warn family before fire in house gains headway within a few seconds after fire breaks out in your home the household can be warned by a howling alarm which is simply screwed into a light socket says popular mechanics chanice cs this detector utters an unmistakable MIS shriek if the temperature in the room rises at a sustained rate of 15 or 20 degrees per minute this rate of rise thermostat will catch the fire before it has reached dangerous proportions yet will not cause false alarms from ordinary changes in room temperature due to weather or winter heating of the building plugged into a ceiling socket in basement attic or closet danger spots for fires in the home it will detect any sudden surge of heat almost instantly the rate of rise feature is operated by a small air ex mansion chamber with an extremely sensitive diaphragm which bellows out when the temperature rises in the air chamber and closes an electrical contact there is an additional thermostat which in the event a smoldering slow fire has not actuated the alarm will sound the howler when the room tempera temperature tur e reaches degrees the signal operates on alternating current and uses about eight watts A tiny neon lamp consuming four tenths watt shows that the current is on the detector readjusts itself after the fire is extinguished and need not be replaced extension howlers bowlers and detectors can be connected for remote alarms |
