Abstract: A therapeutic device utilizes a flexible circuit board for generating heat in localized dermal areas. A source of power such as a battery is operably connected to the flexible circuit board. A pulse width modulator is interposed the source of energy and the circuit board to control the amount of heat generated thereby. The therapeutic device may be used conjointly with an adhesive bandage strip or gauze pad to absorb any body fluids secreted by the user in response to the heat generated by the device such as by a dermal eruption or the like.

Abstract: An alarm system for sensing an alarm condition within a relevant alarm area includes one or more portable alarm units for sensing an alarm condition. Each alarm unit includes a radio frequency transmitter for identifying the alarm unit and a secondary, audio, transmitter for defining the relevant alarm area. The system also includes a plurality of transponders. Each transponder includes a primary receiver for receiving a radio message from an alarm unit and a secondary receiver for receiving an audio signal from the alarm unit. A real-time clock in each transponder provides the elapsed time between receipt of a primary and receipt of the secondary alarm signals. The alerted transponders then transmit to a control unit a transponder address code, an alarm unit identification code and an elapsed time indicia. Based on the address code or codes and the minimal elapsed times detected by the control unit, the relevant alarm area can be determined.