Proportional Auto-Heat-Cool-Off Thermostat w/ On/Off Valves TA158-100

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Proportional Auto-Heat-Cool-Off Thermostat with On/Off Valves TA158-100. This thermostat allows for convenient access to current zone temperature. 

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
Digital Controller for Accurate Zone Comfort
The T158 microprocessor-controlled thermostat is a stand-alone digital controller that supplies 24 VAC output control for valves, dampers, relays and three-wire floating valves. The use of an advanced proportional integral (PI) algorithm allows precise control of zone comfort under varying operational and environmental conditions.

Easy-to-Use Digital Display
The digital display, with easy-to-use adjustment buttons, allows convenient access to current zone temperature, setpoint temperature and operating mode.

Technical Specifications
Temperature Range 50 to 90°F / 10 to 32°C
Operating Differential 1°F / 0.5°C
Proportional Band 2°F / 1°C
Maximum Ambient 130°F / 54°C
Load Connections Terminal blocks
Mounting Installs on a standard 2" x 4" (50.8mm x 101.6 mm) device box
Agency Approvals UL, UL Canada, CE