Celestron Smart DewHeater and Power Controller 4x

Using real-time data, the controller provides just enough heat to prevent dew from forming, prolonging battery life “Smart control” system monitors ambient temperature and humidity and adjusts power to four dew heaters automatically Compatible with Celestron Dew Heater Rings and third-party heating bands or straps (with thermistor accessory) Also provides power management for your entire setup with four 12V DC power output ports (one with variable voltage) Integrated USB 3.2 hub with three powered USB Type A ports allows you to connect all your devices to your computer with only one cable