Peco Controls Proportional Auto-Heat-Cool-Off Thermostat w/ 3-Wire or On/Off Valves

T158 & T168 digital thermostats are standalone digital controllers. T158 controls 24 VAC output On /Off for valves, dampers, relays and three-wire floating valves. T168 proportional thermostat delivers 0-10 VDC or 4-20 mA output for proportional control of valves and dampers. With a digital display and easy-to-use buttons, it delivers easy access to temperature, set-points and operating mode. The digital display, with easy-to-use adjustment buttons, allows convenient access to current zone temperature, set point temperature and operating mode. Optional changeover, setback and auxiliary heat functions are available, on selected models, for adapting to application requirements. Features: Microprocessor Control Local or Remote Sensing On/Off Temperature Control Output Three-Wire Floating Control Output (TB158) Three Speed Fan Switching 2-Pipe/4-Pipe Configuration Manual or Auto Changeover Setback Capability Staged Heat (TB158) Operates at 50 or 60 Hz Fahrenheit or Celsius Display