ITEM NAME:40pcs MOSFET MOS FET Trigger Switch Driver Module PWM Regulator Control Panel .like-pro-float .like-pro-price-both{clear: both;.40 Pieces MOS FET Trigger Switch Drive Modules. High power MOS field effect tube trigger switch driver module PWM regulating electronic switch panel. Trigger Signal Source: digital high/low level (DC 3.3-20V),can connect with MCU IO port, PLC interface, DC power etc; can connect with PWM signal; support signal frequency 0--20KHz.