General equipment: suitable for car heaters, diesel air heaters, and auxiliary heaters. Cable length: 33 cm. Dimensions: approximately 9.3 x 6.3 x 1.3 cm (3.66 x 2.48 x 0.51 inches). Remote control size: approximately 5.5 x 3 x 1 cm (2.16 x 1.18 x 0.39 inches). How to match: To determine if the auxiliary heater is compatible, check the LCD type on the original LCD screen. If the LCD screen is damaged, replace it with the same type. Remote control setup: With the device powered off, press the up button first, then press and hold the confirm button for more than 3 seconds. The remote control will display the password interface showing HFA. Enter the password using the remote to activate it. Once confirmed, the device will switch to the power-on state. Reliable performance: Features an LCD display that is clear and easy to read. Well-built with durable materials for long service life. Includes time setting function for scheduled start or stop. Compact and lightweight design for easy portability.