Double Hole. Aviation plug connected to main machine or mug printing's limit switch line. Aviation Plug connected main heating plate or mug mat plate'.Control Box slide move up and down to install or uninstall control box.Digital control system, a microprocessor program, and a high-precision control panel.Converting temperature unit :1. Press and hold the SET button for about 6 seconds after booting.2. The numbers are flashing, and the up and down keys can be used to set and convert the temperature unit.3 .F is in degrees Celsius, C is in degrees Celsius.4. After selecting, press and hold the SET button for about 6 seconds to return to the heating standby state.5. Setup is completeNote:1. For continued protection against fire, disconnecting supply before using the machine, check the supply ground connection well before using.2. Disconnect -supply before replacing different-function heating unit.3. Put in the object that is going to be printed, close up the pressure handle and rotate the adjusting screw to get a proper pressure.4. The surface of the heat unit is hot during heat pressing, do not touch them with no proper protection.5. This control box is only available for machines with K-type thermocouple, not all models.(Using unsuitable machine may damage the product)Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on.color:WhiteMaterial:MetalPackage Contents:1 x Heat press machine digital boxOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.