A temperature alarm includes a thermostat for actuating an audible alarm, a control panel-mounted LED and a circuit board-mounted LED. The audible alarm, once actuated by the thermostat, can be temporarily disabled by the user by actuating a disable timer connected to the audible alarm. After a period...http://www.google.ca/patents/US4864283?utm_source=gb-gplus-sharePatent US4864283 - Temperature alarm
