Detailed Product Description

Laser Listening Device
We've received countless requests for these, so here they are! A laser listening device which requires no transmitter to be placed in your target's area! Simply focus the laser on any window of your target's home, office, etc. and hear what's going on. Once the laser hits the window, it instantly reflects back at the unit, which receives the returning laser signal, and gives you the audio from inside. 
The standard unit has a range of up to 50 meters, while the advanced unit features an additional lens increasing the range to 200 to 400 meters! Some patience is required with the standard unit, to learn proper alignment. Both units come with a red laser to help in learning proper alignment, which can be replaced with a clear laser when ready for use. 
Laser listening unit specs: 
Laser transmitter
Laser 			: semi-conductor cw / pulse laser. 
Wave length		:  +  / -800 nM
Output power		: 30 mW cw or pulse
Current consumption 	: 150 mA
Beam focus		: Continuous
Target finder		: Tube (optional IR-camera) 
Features		: switch able modulation search tone
Laser receiver unit
Detector type		: 4 quadrant low-noise pin-diode
Wave length		:  +  / -800 nM
Lens opening		: 75 mm
Lens focus		: 180 mm
Amplification		: Adjustable
Connection		: Headphone, Speaker
Voice filter		: Equaliser, notch filter adjustable
VOGAD		: Voice Operated Gain Amplification Device
Line output		: 750 mV recording output
Range and angle
Range / angle		 	: 50-100 mtr (angle 0-6 degrees) 
: 100-200 mtr (angle 10-90 degrees) 
Depending on radiation angle (4 axis) and target surface. 
Dirty windows preferable