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This thermostat is very accurate and can be used to control heating or cooling equipment. It has a NEMA 4X waterproof enclosure which was developed with harsh greenhouse environments in mind (it can even be used outdoors). The JDDT1 thermostat has a 10' waterproof temperature sensor which allows you to control temperatures remotely, and it retains settings in memory in case of power failure. The current temperature is shown on the digital display when thermostat is on. Comes with 6' plug in cord.

Features

  • Huge temperature range: -50° to 302° F
  • Adjustable 1° to 20° F degree temperature differential
  • Comes with a 10' waterproof temperature sensor
  • Can handle 16 full load amps @120V
  • Weatherproof enclosure
  • Can be used for heating or cooling
  • Bright easy to read digital display
  • Built-in memory retains settings in power outage
  • Plug and play (no wiring required)

Thermostat placement in a greenhouse: To get the desired temperature, thermostats should be located at plant height near the center of the greenhouse where they are not influenced by drafts or the temperature of an exterior wall. It is best if both heating and cooling thermostats are located together and protected from direct contact with sunlight and water. One simple way to accomplish this would be to mount the thermostat(s) to a piece of wood (or other nonconductive material) with a top on it like in the picture to the left. Wood should be painted white to shade it from the sun.

What is a Differential? The difference between on and off setpoints on a control. For temperature, it is the difference in degrees between the thermostat's on and off setting. If you set a heating thermostat with a 3 degree differential to 71°, it will supply power at any temperature below 71° and cut off at 74° (3 degrees above the setpoint). A cooling thermostat would cut on above 71° and off at 68°.

Product Manuals, Tips, Specs, & Guides

JDDT1 Instruction Manual