Focusable 980nm 30mw Infrared IR Laser Dot Diode Module 3V-5V with TTL 0-15KHz 12x40mm

How to use:
please tie red and yellow together for it to work.Seen well on security cameras
May be phone camera looks a bit blurry. Must be IR blocked. Looks well enough in my photo I guess.
this is photo of tried TTL modulation on a TV Be Gone. Works beautifully!

Output power: 30mW
Wavelength: 980nm
Operating voltage: 3.0-5.0VDC
Continuous current: <100mA Dimensions: 12 mm x 40 mm Cable length: 250mm Output terminals XH-2.54 * 3PIN TTL:> 2.5 V ON / <1.6 V OFF, high open low off, normal status closed TTL output: 0-15 kHz square wave Red wire: power supply "+" Black wire: power supply "-" (common negative pole for power supply and TTL) Yellow wire: TTL "+" Package: 1pc 980nm 30mw IR Laser with TTL