How many beam barrier pairs do I need to protect a fence line?

Divide the perimeter length by the effective range of your chosen beam product (typically 30 m for wireless SL-TNR, 100-200 m for wired twin-beam, 650 m for quad-beam). Outdoor installs derate ~30% from rated range for rain/fog margin. A 120 m fence usually needs 1-2 pairs of SL-100Q twin-beam, or 1 pair of SL-200QN.

What's the difference between twin-beam and quad-beam barriers?

Twin-beam barriers stack 2 IR beams vertically — both must trip simultaneously to alarm, eliminating false triggers from birds, leaves, and small animals. Quad-beam stacks 4 beams (typical 0.4/0.8/1.2/1.6 m heights), making it nearly impossible to crawl under or climb over without breaking the beam plane. Use quad-beam for high-security or estate perimeters.

Should I use wireless or wired beam barriers?

Wireless (Optex SL-TNR) is battery-operated and ideal for retrofit, where running cable would be expensive or destructive (existing fences, listed buildings, large gardens). Wired beams have unlimited runtime, faster response, and integrate directly into the alarm panel — preferred for new builds and high-value sites where battery maintenance is a liability.

Can I use beam barriers indoors?

Yes — indoor beam barriers excel in corridors, warehouse aisles, museum displays, and any narrow choke-point where you want a 'tripwire' detection line that ignores movement on either side. Indoor ranges hold to rated spec (no weather derating needed). For valuable items, install at multiple heights (low beam + waist + chest) to detect crawling and crouching.

How far apart should I space beam barrier pairs along a long perimeter?

Space pairs so they meet at posts/columns of your fence (typically every 30, 50, or 100 m depending on which product tier you pick). Overlap zones by ~10% at each junction so a strong fog patch or one failed unit doesn't open a gap. For perimeters over 500 m, use the SL-650QFR which provides full coverage with one pair per segment.

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Optex 카탈로그에서 제품을 자동으로 선택하여 트윈 빔 또는 쿼드 빔, 유선 또는 무선 방식의 경계선 IR 빔 커버리지를 계획하십시오.

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보호할 경계: 120 m

환경

실외 측정 범위는 비/안개 환경에서의 신뢰성 확보를 위해 정격 최대치에서 약 30% 정도 감소합니다.

애플리케이션

보안 수준

쌍광선 방식과 논리 회로를 결합하여 새나 날씨로 인한 오경보를 방지합니다.

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빔 쌍 필요

둘레가 120 m이고 유효 범위가 쌍당 약 21 m일 때 총 12 단위(TX + RX)입니다.

지도 빔을 울타리 경계선에 비춰보세요.

설계 프로그램에서 TX/RX 쌍을 주변부에 배치하고, 하드웨어를 주문하기 전에 겹치는 영역과 간격을 확인하십시오.

빔 배리어 계산기

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지도 빔을 울타리 경계선에 비춰보세요.