Sentinel - BTC-1A Basic Temperature Controller (Wall Mount Version) (BTC-1A WM) (703218)

Model: 703218

The BTC-1a comes in two versions, "Plug Box" and "Wall Mount" -- this version is the Wall Mount/WM version.

The BTC-1a Basic Temperature Controller is designed to control fans, heaters, air conditioners and other equipment in gardens, greenhouses, grow rooms and other environments. It can operate in either cooling or heating modes. The BTC-1a features a readily visible switch to alternate between cooling and heating, making it easy for the end user to differentiate which mode it is operating in. Easy-to-read dials make programming daytime and nighttime settings uncomplicated. The (3) function LEDs let users know if the controller has main power, if the controller is in operation, as well as whether the controller is sensing day or night.


  • ETL listed in the USA and Canada
  • RoHS compliant
  • Durable construction built to withstand high impacts
  • Premium Wall Mount version includes 6.5' (2m) grounded power cable, sturdy bracket and mounting hardware.
  • Budget-friendly Plugbox version mounts directly to standard NEMA 5-15 120v receptacle.
  • Backed by the Sentinel GPS full 2 year warranty.


Input Power 120V / 60hz .1A
Output Power 120V / 60Hz 15A 1/3 HP
Power Inlet 6.5' (2m) 14 gauge cable
Temperature Storage Range 15°F(-10°C) to 140°F(60°C)
Temperature Control Range 55°F(13°C) to 95°F(35°C)
Operating Modes Cooling or Heating
Sensor Cable Length 6.5' (2m)
Temperature Hysteresis 3°F (2°C)
Dimensions 4.8" (122mm) H x 2.75" (70mm) W x 4.1" (103.5mm) D
Weight 1.6 lbs (0.7kg)
Weight: 1.6 lb.
Dimensions: 4.1in. × 2.75in. × 4.8in.
List Price: $89.95