The Heat Bed High Power MOSFET Module 25A-12V~50V is an external power expansion board designed to protect 3D printer mainboards from high electrical currents generated by heated beds
Arduino Pro Mini Atmega328PU-TH 5V/16MHz is basically an Uno or Nano which has been stripped down to its most basic configuration for the smallest size.
Signal Generator PWM Pulse Frequency Duty Cycle Adjustable Module, 3 Channel, 1:150Khz, 3.3:30 V DC. An electronic module identified by its model and function.
The MS-190 Mini Motor Siren 220Vac is a compact, high-decibel industrial alarm that produces a loud, piercing sound similar to an electric drill by using a motor-driven windscrew mechanism
