Abstract: The present invention is a system of wireless, battery operated temperature sensing devices which transmit ambient or other sensed temperature information to a programmable thermostat. The compact construction and multi-level programming of the temperature sensing devices for only periodic transmission of temperature information to the programmable thermostat permits years of operation with power supplied by small, inexpensive batteries. The temperature sensing devices are therefore easily installed at any location within about 100-200 feet from the programmable thermostat. The present invention also comprises a method of retrofit for the programmable thermostat of U.S. Pat. No.

Abstract: The present invention allows the user to quickly and repeatedly program one receiver controller device at least controlling one or more heating or cooling devices for one desirably separate zone of occupation to another such receiver controller device set at least controlling another separate set of heating or cooling devices for another desirably separate zone of occupation. The realities of present day industrial and commercial buildings is that they comprise many such separate zones of occupation with separate heating or cooling devices controlled with separate controllers due to the diverse nature of the desired temperatures, dead bands for controlling such temperatures, temperature and device operation ramping, times of occupation, economization measures imposed for each zone, and the many similar aspects of thermostatic control described herein and in the prior art.

Abstract: A conditional autodialer coupled to a telephone line is adapted to selectively automatically dial a predetermined telephone number, after a predetermined delay period following the appearance of an on-hook to off-hook transition on the telephone line. The autodialer includes an off-hook detector, a touch tone detector, a memory for storing the predetermined number, a dialer and a controller (such as a microprocessor) coupled to receive signals from the off-hook detector and touch tone detector, to communicate with the memory and to provide command signals to the dialer. In operation, the controller responds to an off-hook condition by starting the delay period. If the delay period successfully times out, the controller reads the predetermined number from memory and enables the dialer to dial the number onto the telephone line. However, if, during the delay period, the presence of a DTMF digit or an incoming call is sensed, dialing the predetermined number onto the line is prevented.

Abstract: The present invention is a voltage adapter for a low voltage thermostat which permits the following input voltage ranges:100-132 VAC/50 or 60 Hz,200-264 VAC/50 or 60 Hz, and265-330 VAC/50 or 60 Hzmaintaining an output of at or just effectively about 24 VAC.

Abstract: The present invention discloses application of axial-radial reactors to the Braun synloop using an external heat sink between the feed/effluent exchanger and the inlet to the second reactor. The advantages of the axial-radial reactors in the Braun synloop have been heretofor unavailable for failure of the prior art to combine the advantages of the high conversion disclosed in U.S. Pat. No. 4,867,959 with axial-radial reactors.