1. 4 Channel of frequency adjustment active infrared fence detector, multi-Frequency: Reduces interference and eliminates crosswalk when multiple units are used in close proximity to another one.
2. No need to connect sync cable (not for 2 beams)
3. Imported high power receiving tube and transmitting tube
4. Can be installed at door, window, passage, etc...
5. Aptitude judgement, prevent traditionally false alarm
6. Recognize object, can distinguish size of traversing object, will not alarm when the intruder is a cat or a dog
7. Anti-cutting function disturbs technology
8. Anti-rain function can be used outdoor of wet places
9. Alarm Indication: Buzzer buzzing
10. Install and debug easily
11. Infrared beam detector (height: 27 1/2" (70cm)), 4 beams 131ft (40m) detection
These infrared photo beam curtain/barrier sensors are perfect for installation in windows, doorways, skylights, fence tops, any place where space is limited.
Suitable for indoor and outdoor perimeter security, the trigger is programmable for simultaneous breaking of any single or 2 adjacent beams. The design features rugged aluminum construction, and an anti-tamper circuit for triggering an alarm if power is cut or the end cap is removed.