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1. Anti strong light up to 50000LUX, built-in auto adjustment filtering system, avoid the interference strong light and car spotlight.
 2. Unique optical design: The optical beams could penetrate through multilayer glass, strong resistance to external interference.
 3. Integrative structure for waterproof, dustproof and mothproof
4. Adopted the large caliber non-sphere dual focus coaxial optic lens, and fresnel lens optical.
 5. Strong function of RFI & EMI.
6. Using the multilevel LED, solve the trouble of interference by the
7. Detecting distance: Depending on different models

Model		ABT-20	ABT-30	ABT-40	ABT-60	ABT-80	ABT-100	ABT-150
alarm distance	indoor	20m	30m	40m	60m	80m	100m	150m
	outdoor	60m	90m	120m	180m	240m	300m	360
maximum distance		230m	350m	460m	650m	900m	1100m	1250m
number of beams		2 beams
way of detection		detect when all 2 beams are cut
light source		IR LED
detecting speed		50 -700 msec
alarm output		relay port output, port capacity: ACDC30V0.5Amax
power supply		DC12-18 V
current		40mAmax			55mAmax	65mAmax
operating temperature		- 25-55c
tamper output		DC30V0.5 Amax.
horizontal angle		180° ± 90 °
vertical angel		20° ± 10 °
material		PC& ABS
weight		300g/pc for sender or receiver each