21best.com electronic products.

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1
Automatic motorized pan and tilt heads.
360 Degree pan and tilt head.
Wired or IR wireless remote controls.
Motorized Panhead automatically follows as you move!

2
Video Inspection Cameras, submersible, weatherproof.
Micro size 1/2-inch diameter with headlights.
Real time video inspection of hard to reach locations.
Plug and play, easy to use.

NEW

3
Pan Tilt Zoom, Color Camera System.
See in complete darkness up to 7,200 feet.
Thermal, Laser, Rapid motion, Night and Day,Weatherproof.
With controller, Infrared Illuminator, cable & power supplies.

	4 Hum filters Eliminates video bars on video images. Ground loop problem solver, hum eliminators. Ground loop isolation transformers & chokes. For CATV, Video and Audio.

	5 Matrix switchers 8 by 8 & 5 by 2, audio and video. Video selectors 4 inputs, composite, S-Video, more. Quad Video splitters , sequential, 9 cams on 1 screen. Speaker Selectors 8 speakers on one stereo.

6
Video monitors Color 1" to 7" Service Monitors.
Video cameras Micro sized, security, waterproof, etc.
Brackets & Housings for video cameras, Weatherproof.

7
Audio & Video Distribution amplifiers, VDAs
One audio & video in and many audio & videos out.
Stereo Audio, Color and black & white.
Video Only, Easy to use, plug and play.

8
TV Modulator Put video on TVs, SMATV, MATV.
Channels 2 through 135.

9
Rechargeable battery 12 VDC, Shoulder and belt pack .
12 Volt DC, 7.2 Amp hours, a small, high performance battery, with Cigarette Jack Connector and a fuse. Includes a shoulder strap and a convenient belt loop so it can be waist worn.

10
CATV channel chart of video frequencies.
Signal to noise ratio chart.
Signal strength and picture quality nomograph.

11
Wireless FAQ , tips for getting much more range out of your audio & video transmitters.