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  • 2 Sensors: Temperature, Humidity
  • User Interface for: SC160 & SC160-XP Controllers
  • 2-Wire Communication and Power to Controller
  • Fully Programmable LCD Display
  • Selectable Display Screen Options

The SI-20 sets a new standard in aesthetics and functionality. The architectural design of the SI-20 was achieved through the input of industry professionals, as well as a multitude of end users. Its copyrighted design has been described as “Simple Elegance”. The SI-20 quietly blends in to its surroundings and is as comfortable on the boardroom wall as it is in a classroom. Rave reviews have also been received by custom homeowners and designers. Architects and designers can now work in harmony with engineers and contractors. The aesthetic integrity of a building no longer has to be compromised to deliver optimum comfort and performance.


EC160 & SC160 compatible: 2-wire SI-20 Communication Bus
Maximum Distance: 500 feet
Protection Circuitry: Reverse Polarity Protected
Communication Jack: 2.5mm (optional)


Operating Temperature: 0 °C to +50 °C, 32 °F to 122 °F
Storage Temperature: -20 °C to +70 °C, -4 °F to 158 °F
Relative Humidity: 5% to 95% (non-condensing)

On-Board Temperature Sensor

Temperature Sensor: Precision Thermistor, 10K Type II
Accuracy: ±0.2 °C, ±.36F (0 to 50 °C)


Upper Line: 8 Character Alpha-Numeric
Lower Line: 4 Digit LCD Display
Push Buttons: 4 Fully Programmable for User Functionality
Dimensions: L 5.14” x W 3.13” x H 1.04”, (130.6 x 79.5 x 26.4 mm)
Material: ABS, UL 94-VO rated


Period: 2 Years (Limited)


Standard Model


Standard Model with Communication Jack