Features: Bigtreetech Relay V1.2 Modules Automatic Shutdown Modules After Printing To BIQU-Thunder For CR10 Printer Reprap 3D Printer Part; The function is to automatically detect whether the 3D printing of project printer is completed. When it is detected that project is printed, power can be automatically turned off. The goal is to create an automated 3D printing environment with low-carbon content, environmental protection, energy savings and reduced consumption. Can be Programmed:Support Resume Printing While Power Off Specifications: Material:PCB AC-Input Voltage:85V-AC-265V-AC Logic-Input Voltage:3.3V-5V Support Outage Detection:Support Short Circuit Detection Can be Programmed:Support Resume Printing While Power Off Package Includes: 1xAutomatic Shutdown Modules note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.