Install them at the opposite positions.
Wireless beam security.
Description this is a pair of infrared detector.
Wired and wireless outdoor beams and detectors that can work on standalone systems or connect to your exisiting alarm system.
1 16 of over 1 000 results for wireless security beam alarm htzsafe solar wireless driveway alarm system 1 2 mile long transmission range 300 feet wide sensor range no wiring no need replace battery outdoor weatherproof diy security perimeter alert system.
4 5 out of 5 stars 92.
The beam operates up to 3 years from 3 standard aa alkaline batteries.
Each guard has two sensors one on top and one at the bottom each emitting 11 beams a top and bottom beam have to be broken within half a second to trigger an alert.
Minimizing false alarm weather proof ip 55 see full description about beam sp 100 meter r 1 201 89 15 vat incl.
Reliable perimeter security and protection beam laser beam alignment function twin beam.
Outdoor alarm camera security system including a wireless perimeter gsm alarm with 4 x sets of long range solar powered wireless perimeter beams 1 x wireless receiver 1 x gsm auto dialler 2 x remote controls 1 x stand alone 4g battery camera.
Two way wireless communication 868 mhz frequency 8 adjustable sensitivity settings.
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All wireless outdoor beams feature a unique built in siren that provides an unexpected element of surprise next to an intruder.
Then there is a infrared area between these two detector parts.
When someone passes the infrared region for an.
The roboguard is a stand alone wireless automatic outdoor intruder security system using passive infrared sensor beams that detect movement up to 20 meters away in an 110 arc.
18m detection range 90 degrees wide.
Fidgetkute home security wireless dual beam infrared ir door sensor detector burglar alarm show one size.
Htzsafe solar wireless driveway alarm system 1 4 mile long transmission range 190 feet wide sensor range no wiring no need replace battery outdoor weatherproof diy security perimeter alert system 4 2 out of 5 stars 102.
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Built in repeater functionality for extended wireless range.