","conds":[],"logic":"AND"}]; function pick(o){for(var i=1;i0)out.address=addr;return Object.keys(out).length>0?out:null;}function addUserData(payload,p){var u=buildUserData(p);if(u)payload.user_data=u;return payload;} function matchCond(c,ctx){ var val=ctx[c.f]||''; if(c.o==='contains')return val.toLowerCase().indexOf(c.v.toLowerCase())!==-1; return val.toLowerCase()===c.v.toLowerCase(); } function matchVariant(v,ctx){ if(v.conds.length===0)return true; if(v.logic==='AND'){for(var i=0;i
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Perimeter Intrusion Detection System with IR Beam Sensors

WittySense perimeter intrusion detection system uses active infrared beam sensors to protect boundary walls, fences, gates and open compounds. We offer dual beam, triple beam and quad beam sensors, so you can choose the right coverage for your site. When an intruder crosses the invisible beams, the sensor sends a signal to the alarm panel, giving you an alert before the intruder reaches the building. Made in Indore, India.

What Is a Perimeter Intrusion Detection System?

An IR beam sensor has a transmitter and a receiver. The transmitter sends invisible infrared beams to the receiver. When a person or vehicle breaks the beams, the sensor triggers its alarm output and signals the control unit.The number of beams decides how the sensor covers the boundary line, so choose according to the length, height and risk level of your perimeter.

Complete Your Perimeter Security System

A perimeter intrusion detection system detects an intruder at the outer boundary of a property, before they reach the doors and windows. It works as the first layer of a perimeter security system, giving you more time to react. IR beam sensors are widely used for this because they cover long distances in a straight line, such as along a wall, fence or gate.

What Is a Perimeter Intrusion Detection System?

A perimeter intrusion detection system detects an intruder at the outer boundary of a property, before they reach the doors and windows. It works as the first layer of a perimeter security system, giving you more time to react. IR beam sensors are widely used for this because they cover long distances in a straight line, such as along a wall, fence or gate.

Dual IR Beam Sensor

Dual beam infrared detector for perimeter protection of homes, shops, factories and warehouses. Detects intruders when both beams are blocked at the same time.

  • 2 infrared beams, alarm triggers only when both are blocked together, so false alarms are reduced

  • Infrared digital pulse beam technology

  • Response speed adjustable from 50 to 700 msec

  • Relay output: NO/NC, AC/DC 30V 0.5A max

  • Power supply: DC 13.8–24V or AC 11–18V

  • Current consumption: 40mA to 65mA max (depending on model)

  • Tamper output: NC contact, DC 24V 0.5A max

  • Horizontal alignment ±90° (180°), vertical ±10° (20°)

  • Operating temperature -25°C to 55°C, humidity 5% to 95% RH

  • Protection against dew and frost (heater optional)

  • PC resin body, net weight 500g (receiver + transmitter)

Active Triple Infrared Beam Sensor

Active triple infrared beam sensor for perimeter protection, with a fully sealed rainproof and dustproof design.

  • 3 infrared beams, infrared transmitting frequency 1.92 kHz

  • Outdoor alert distance up to 250 m, indoor up to 750 m

  • Anti-glare up to 50,000 lux with strong-light filtering

  • Built-in AGC circuit with high anti-EMI/RFI capability

  • Response time: 35-700 ms

  • NC/NO alarm output for easy connection to the alarm panel

  • Operating voltage 12V DC, working current 60-70 mA

  • Adjustable angle: horizontal ±90°, vertical ±10°

  • Working environment: -25°C to 65°C, 5-95% RH

  • PC housing, dimensions 27 × 10 × 9.5 cm

Quad Beam IR Sensor

Photoelectric quad beam detector for long-range perimeter protection of homes, factories, farms and industrial sites.

  • 4 infrared beams with “And” / “Or” detection technology

  • Interruption time adjustable: 50ms / 100ms / 300ms / 700ms

  • 4 selectable frequencies to avoid cross talk in stacked installations

  • LED display signal grading for easy alignment

  • DIP switch for easy programming

  • Digital filtering for high environmental adaptability

  • Relay output: 1C (AC/DC 30V, 1.0A max), NO/NC selectable

  • Tamper switch, activates when cover is removed

  • Power supply: 12–24V DC/AC, current 70mA to 110mA max

  • Alignment angle: horizontal ±90° (180°), vertical ±10° (20°)

  • Waterproof grade IP65, suitable for wall or pole mounting

  • Operating temperature -25°C to 55°C, humidity up to 95%

  • Dimensions: 395 × 105 × 100 mm

dual beam IR sensor for perimeter intrusion detection
triple beam IR sensor SE250 for perimeter intrusion detection
quad beam IR sensor for perimeter intrusion detection
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