... to produce low price co2 laser power supply, dc power supply, 12v power supply, laser power supply with reliable quality.Available power: 40W 60W 80W 100W 150W1. ... ), “4” for ground, “5” connected with power control analog signals, “3” and “4” connected;5)“5” can also use PWM, but ... “4” water protection;8)Not suggest to advocate high frequency modulation to control the laser power, it will affect the ...