TrolMaster BETA-4 Digital Temperature Controller – Day/Night Precision for Heating & Cooling Maintain precise environmental conditions in your grow space with the TrolMaster BETA-4 Digital Day/Night Temperature Controller. Designed to operate heating or cooling devices up to 10 amps, the BETA-4 makes it simple to dial in ideal temperatures with separate day and night settings. Equipped with an easy-to-use LED display and built-in photocell, the BETA-4 automatically adjusts based on light conditions. Just plug your heater or cooler into the outlet on the bottom of the unit, set your desired temperature range (40–100°F), and let the BETA-4 handle the rest. The included 16-foot temperature probe allows you to monitor conditions close to your plant canopy for optimal results. Features: Controls heating or cooling devices (up to 10 amps) Separate day/night temperature settings Built-in photocell for automatic light detection Digital display with simple 3-button operation 16 ft temperature sensor cable for precise placement Adjustable deadband (5°F) Package Includes: 1 x TrolMaster BETA-4 Temperature Controller 1 x Temperature Sensor Specifications: Voltage: 120V AC Output Switch: Triac Fuse Rating: 6A/250V Power Cord: 1.8m Temperature Control Range: 40–100°F Deadband: 5°F Take the guesswork out of temperature control with the TrolMaster BETA-4—your go-to solution for consistent climate conditions day and night.