Trotec Laser Blower Control Box 120VAC 20A 2HP w/ 20' cabling & mating twist lock connector. Controls the high current power to the 120VAC 20A max blower. Power in and power out cables, signal input cable from your Trotec laser (controller by driver software, Power Available indicator. Other options available: Stay on Timer circuit, manual On/Off/ Auto switch. Other voltages and current version available.