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Optex Products

This page gathers Optex intrusion detection: REDWALL long-range outdoor PIR detectors, garden and approach sensors, curtain PIRs, active infrared beams and the towers that hide them, REDSCAN laser scanners, a fibre optic fence system, indoor PIR and dual-tech detectors, and presence sensors for automatic doors. Mounting brackets, hoods, heaters, alignment tools and power units for the same detectors are here too.

Choosing Optex Products

Match the detector to the area it guards: a room, a garden approach, a long perimeter line, or a wall or roof that needs a laser or fibre system.

REDWALL long-range PIRs

REDWALL SIP detectors watch large outdoor areas and can trigger cameras. The SIP-404 covers 40 × 4 m in two independent near and far zones, the SIP-3020 covers 30x20m, and the SIP-100 draws a long, narrow 100 × 3 m curtain with separate far, near and creep alarm outputs. The SIP-HU heater unit keeps SIP detectors working in cold climates, and the AVF-1 viewfinder helps set the detection area during installation.

Garden and approach sensors

The VXI-AM is a hardwired dual-PIR outdoor detector with approach detection up to 12m, an IP55 rating and anti-masking. The QXI-DT-X8 adds dual technology for 12m and 120° coverage, with high and low mount options. For a boundary, the BXS-ST curtain PIR detects on both sides, 12m per side.

Beams, lasers and fibre

The SL-350QN is a 100m outdoor active infrared beam set for perimeter security. Towers such as the STW100 conceal beams, so an intruder cannot tell how many are fitted or at what height. REDSCAN laser detectors build a detection area in space: the RLS-2020I is a Grade 3 indoor laser sensor for skylights, walls and assets, and the RLS-3060SH identifies a moving object's size, speed and distance. The FD332 fibre optic unit protects two fence or wall zones, using sensor cable such as the SC3-C.

Indoor detectors

The FlipX FLX-S-DT combines PIR and microwave, with a rotatable lens for a wide 12m pattern or a narrow 18m one. The CX-702MKII is a Grade 2 indoor sensor for long-range detection in commercial and industrial buildings.

ModelTypeCoverageTypical use
SIP-404REDWALL PIR40 × 4 mPerimeter, camera trigger
SIP-3020REDWALL PIR30x20mPerimeter and approach
SIP-100REDWALL PIR100 × 3 mLong, narrow line
VXI-AMOutdoor dual PIR12mGarden approach, IP55
BXS-STCurtain PIR12m per sideBoundary
SL-350QNActive infrared beam100mPerimeter line
RLS-2020ILaser scannerSet areaIndoor, Grade 3
FLX-S-DTPIR and microwave12m wide, 18m narrowIndoor rooms

Related categories

See also Optex SIP-3020 Motion Sensors and Optex SIP 4010 Outdoor Motion Detectors. See Optex REDWALL and outdoor sensors and Optex SIP 404 detectors, connect them to security alarms and sensors or CCTV cameras, or browse the wider security and surveillance range.

Frequently asked questions

What does Optex make?

Optex is a Japanese maker of intrusion detection sensors, including indoor PIR and dual-tech detectors, outdoor PIRs, active infrared beams, laser scanners and fibre fence systems. Its REDWALL detectors are often used to trigger CCTV cameras. It also makes presence sensors for automatic doors. The range here includes detectors, beam towers, brackets and power units.

Can Optex detectors connect to an alarm panel?

Yes, Optex intruder detectors usually have relay outputs that wire to the zone inputs of an intruder alarm panel, often through end-of-line resistors. Some can also feed a CCTV or video management system through an IP encoder. Check the supply voltage and the zone wiring the panel expects before fitting. The range here includes end-of-line resistor modules for panel wiring.

How does an Optex PIR detector work?

An Optex PIR detector uses a pyroelectric sensor to pick up the heat of a person moving across its detection zones. Indoor models such as FlipX cover rooms, while outdoor models such as REDWALL watch gardens, approaches and long perimeters. Dual-tech versions add a microwave sensor, so the two technologies need to agree before an alarm is signalled.

How does an Optex beam detector work?

An Optex beam detector uses a transmitter and a receiver facing one another, linked by invisible infrared beams, and signals an alarm when an intruder breaks them. Quad beam sets need several beams broken at once, which can cut false alarms from birds or falling leaves. Beam towers hide the units so an intruder cannot judge their height.

Why buy from West Midlands Electrics

  • Established 1975
  • Birmingham trade counter
  • UK-only supply

Written by the West Midlands Electrics technical team

Updated