Description: The 3D printer mainboard is equipped with a power supervisory module. This module can be used with the Lerdge mainboard to achieve unexpected power failure, continuous shutdown after printing, software control power off, and power status monitoring to achieve interactive printing. Can effectively solve the problem of printing failures caused by accidental power failure, accidental printing, overnight printing, etc. In case of accidental power failure, the system can detect that the grid power supply is disconnected through the first time of the module, but it takes about 1 to 2 seconds to store the data at the moment of power failure. Some of the power supplies may not be enough to provide the required power for saving. , This may cause the save to fail. You cannot continue printing after the next startup The solution is to replace the more powerful power supply or use the backup power supply Package Includes: 1Pcs Power Supervision Module 1Pcs Power Switch (Supporting Wiring 30cm) 1Pcs self-resetting metal button switch (line length 50cm) 1Pcs 3Pin Signal Line 1M 3Pcs Power Plug (30cm)