TTL Laser module

CivilLaser TTL laser module instructions
1.When in use, connect the red and yellow line, the module will be bright, and in continuous work mode;
2.When you want modulation, connect the negative of signal line to black line, and positive to yellow line, keep the red line suspended, then the module in modulation mode;
3.Signal input should be in the range of 30KHZ;
4.The input voltage of modulation work is 3.3~5V, continuous work input voltage is 3.3~5V.