Parameter

Wavelength:650nm
Output Power:30mW
Working Current:<18mA Working Voltage:5.0VDC TTL frequency:0-15KHz TTL modulation Voltage:0-5V Off low, high open, normal status open Dimensions:12mmx40mm Detail: red wire for 5V+, black wire commonly for 5V- and Yellow wire for TTL +. If you only connect its black wire and red wire, the laser would not work, you also need to connect its yellow wire (TTL+) to 5v+. When the TTL signal is connected, the higher the frequency is , the less brighteness the laser will have. when it is >15KHZ, the laser cannot be seen.

Package

5pcs 650nm 30mW 12*40mm Red Laser Dot Module w/TTL 0-15KHz