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White rectangular outdoor quad-beam sensor unit with front lenses and alignment LEDs

SPT SECURITY

SPT SECURITY 15-947 outdoor quad-beam smart sensor

SKU CH-E786-29Y3G MPN 15-947

Outdoor quad-beam photoelectric sensor with digital filter and auto gain control for false-alarm protection in rain, fog or snow up to 60 m range

  • Product typeAccessories
  • Key featuresDigital filiter circuit provides false alarm protection caus
  • Digital filter circuit reduces false alarms from car lights and electrical noise
  • Auto gain control maintains detection in rain, fog and snow
  • Separate receiver LEDs show beam alignment, signal level and alarm status
  • Built-in viewfinders enable precise horizontal and vertical optical adjustment
  • Protection range covers 30 to 60 metres outdoors and 90 to 180 metres indoors

Outdoor quad-beam sensor

The SPT SECURITY 15-947 is an outdoor quad-beam photoelectric sensor designed for perimeter security. It suits installers who need reliable intrusion detection across long distances. Digital filter circuits reduce false alarms from car lights and electrical noise. Auto gain control maintains performance in rain, fog, or snow.

Protection range limits

Outdoor detection spans 30 to 60 metres while indoor range reaches 90 to 180 metres. Quad-beam architecture requires all beams to be broken simultaneously before triggering an alarm. Alignment viewfinders and separate receiver LEDs confirm optimum optical axis adjustment. Blocking time adjustment filters out brief interruptions from small animals or debris.

Capacity and headroom

The sensor comfortably handles standard perimeter lengths up to 60 metres outdoors. It runs out of practical coverage beyond that distance or where multiple overlapping zones are required. Tamper protection and surge absorption guard against physical interference and lightning strikes. Installers needing longer single-zone runs must consider alternative technologies.

How it compares

Measured against everything we stock in Alarm Kits & Motion Sensors, at today’s prices. Recalculated every night.

Price $104.99
Pricier than about 90% of the 180 comparable items (median $30.99).

Specifications

Product
Brand nameSPT SECURITY
Model name15-947
Product typeAccessories
Size & build
Shipping weight0.45 kg
Package size178 × 127 × 76 mm

Questions about this item

Should I select the 30 to 60 metre outdoor range or the 90 to 180 metre indoor range for my perimeter?

Use the 30 to 60 metre outdoor rating for exterior boundaries; the 90 to 180 metre figure applies only to indoor installations.

How does the 30 to 60 metre outdoor range perform when fog or heavy rain is present?

The Auto Gain Control circuit automatically compensates for rain, fog and snow so detection remains reliable across the full outdoor distance.

What wiring standard does the quad-beam sensor use for alarm signalling?

The unit provides a tamper-protected contact output that connects to any standard security panel or alarm input.

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