Features: The main board is equipped with a 32-bit high-speed ARM chip, which adopts the self-developed firmware, and has the advantages of open-source firmware Firmware adopts SD file configuration mode, which is convenient and fast to update. This high power module is a general add-on heated bed power expansion module for 3D printer. The main board is matched with the power expansion module of the large hot bed, which can be connected with the high power hot bed and bear more power. This module under the premise of normal cooling, found at I (Max) = 25A stable work situation, the process of using the current not exceed 25A. Specification: Max Current: 25A Power supply:24V(suggested) Weight: Approx.130g/4.6oz Package list: 2 * 25A hot bed module 2 * Main board PWM 20CM signal control wire 8 * 30cm power supply connection wire (2 red, 2 black, 2 blue, 2 yellow) 8 * Terminal 1、The main board is equipped with a 32-bit high-speed ARM chip, which adopts the self-developed firmware, and has the advantages of open-source firmware 2、Firmware adopts SD file configuration mode, which is convenient and fast to update. 3、This high power module is a general add-on heated bed power expansion module for 3D printer. 4、The main board is matched with the power expansion module of the large hot bed, which can be connected with the high power hot bed and bear more power. 5、This module under the premise of normal cooling, found at I (Max) = 25A stable work situation, the process of using the current not exceed 25A.