JOHNSON CONTROLS DIGITAL THERMOSTAT - A421
The Johnson Controls Digital Temp Controller operates by overriding the internal thermostat in a refrigerator or freezer which gives the user greater control over the temperature.
It can be used to heat or cool a fermentation environment when hooked up to a refrigerator. It turns the compressor on when the ambient temperature rises above your programmed temperature.
When it is hooked up to a heater, it activates when the temperature drops too low. A sensor probe monitors the temperature inside while the readout displays it in either Fahrenheit or Celsius.
- (2) 5 foot extension cords with plug,
- Gas filled sensor on a 8ft felxible cable
- Easy to read LCD display
- 3-button touch-pad
- Temp set points from -40^f to 212^f
- Set differential up to 30^f
(you choose how much the temperature will vary)