Dual Beam Infrared Sensor – 50 Meter Outdoor Perimeter Alarm (IP55)

The Dual Beam Infrared Sensor – 50 Meter is an advanced outdoor security detector designed for perimeter protection and intrusion prevention.

It uses dual-beam infrared technology to ensure accurate detection while minimizing false alarms caused by animals, weather, or environmental interference.

With IP55 waterproof protection and anti-interference design, this sensor performs reliably in outdoor conditions such as rain, dust, and sunlight.

It is ideal for use with alarm control panels, security systems, and perimeter fencing solutions for residential, commercial, and industrial security applications.

This 50m variant is suitable for short to medium-distance security zones such as entrances, boundaries, and restricted access areas.

📦 Package Includes

1 × Dual Beam Infrared Sensor (Transmitter + Receiver) – 50m

Mounting Brackets

Installation Screws

User / Wiring Guide

The short run perimeter sensor, sized for homes and small yards. This dual beam infrared sensor covers up to 50 metres in a straight line, which suits house compounds, small plot boundaries, shop yards, narrow side passages, and the gaps between buildings. It is the most economical way to protect a boundary properly, and for a typical residential compound wall it is usually all the range you need.

Why buying the right range saves money. The instinct is to buy the longest range available in case it is needed. That is the wrong approach with beam sensors. Range costs money, and a 250 metre pair aimed across a 30 metre yard offers no advantage over this unit. Measure each straight run of your boundary with a tape, then buy the range that covers it with a sensible margin. Most residential compounds in Pakistan have sides well under 50 metres, which is exactly what this model is for.

Where it is typically used. House compound walls, the side and rear approaches to a home, small shop yards, narrow alleys beside a building, the space between a boundary wall and the house, and short internal runs such as a warehouse aisle or corridor. It also suits protecting a specific approach, such as the path from a back gate, rather than an entire boundary.

Design to less than the rated distance. The 50 metre figure is a maximum in clear conditions. Dust, fog, and monsoon rain all reduce effective range, so a pair set at its absolute limit will be reliable in one season and erratic in another. Leaving comfortable margin is the single most effective thing you can do for year round reliability, and it costs nothing.

Why dual beam matters here especially. Both beams must break at the same moment before the alarm triggers. On a short residential run close to a street, that requirement is what prevents cats, dogs, birds, and blowing rubbish from setting off the alarm every night. Short runs near homes see more animal traffic than long industrial boundaries, so false alarm immunity matters more, not less, at this range. A residential alarm that cries wolf nightly is switched off within a fortnight.

Alignment and mounting. Mount both units on solid masonry or firmly set posts, facing each other directly. Never fix to a gate, a fence panel, or anything that moves or flexes in wind. Even over 50 metres, a unit on a moving surface will drift out of alignment and produce intermittent faults that are frustrating to trace. Re-check alignment a few weeks after installation and after storms.

Height, and thinking like an intruder. Mounted too high, someone crawls under. Mounted too low, animals and undergrowth trigger it constantly. On a residential compound, consider the height of the wall and how someone would actually come over it. Keep the beam path clear of plants, and account for how they will grow through the season rather than only how the ground looks today.

Weather protection. The IP55 rating handles dust and water spray, which suits outdoor boundary use through monsoon and dusty summer conditions. Mounting under a small overhang or canopy where possible extends life and reduces lens cleaning. Dirty lenses are the second most common cause of unreliable operation, after alignment.

Counting pairs for your layout. One pair covers one straight line, and a beam cannot turn a corner. A rectangular compound needs four pairs, one per side. An irregular boundary needs a pair per straight run. Corners are where perimeter plans usually fail. Send us a sketch of your boundary with rough dimensions and we will work out the pairs and positions for you.

Connecting it to an alarm. The sensor feeds an alarm panel, siren, or dialler, so a beam break triggers the same response as a door contact. Wire it as normally closed where possible so that cutting the cable also raises the alarm rather than quietly disabling the sensor. We stock the panels, sirens, and cable needed to finish the installation.

Power and load shedding. Beams need continuous power, so without backup your perimeter is unprotected during outages, which is precisely when it matters. A small battery backup at the panel typically carries both the beams and the alarm through normal load shedding and is inexpensive to include at installation.

Is 50 metres enough for my compound? Measure each straight side. If any run approaches 40 metres, use the 100 metre model on that side to keep margin.

Can I use different ranges on one property? Yes, and it is usually the economical choice. Use 50 metre pairs on short sides and longer pairs only where genuinely needed.

Will it work indoors? Yes, across warehouse aisles, corridors, and long internal spans, where the same alignment and mounting principles apply.

Does it work at night? Yes. Infrared operation is entirely unaffected by darkness.

Buying from ZZ Marts. In stock at our Karachi (Saddar) and Lahore stores with nationwide delivery, supplied by Zam Zam Traders, trading in security equipment since 2005. We also stock 100 metre and 250 metre pairs, alarm panels, sirens, diallers, backup power supplies, and cabling. Tell us your boundary dimensions and we will recommend the right range for each run rather than selling you more than the job needs.