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Pair of black rectangular sensors with dual infrared beams and viewfinders

SPT SECURITY

SPT SECURITY 15-946-2 Dual Beam Security Sensor 550 ft Indoor 180 ft Outdoor

SKU CH-FQSX-FJH24 MPN 15-946-2

A dual-beam photoelectric sensor that detects motion up to 550 ft indoors or 180 ft outdoors and triggers alarms or gates via a contact output

  • TypeAlarm Sensor
  • ColorBlack
  • Dual-beam infrared detection covers 550 ft indoors
  • Outdoor range reaches 180 ft for perimeter protection
  • LED indicator enables precise beam alignment
  • Built-in viewfinders simplify optical axis adjustment
  • Operates on 12 V to 24 V DC power

Product Purpose

The SPT Security 15-946-2 is a wired dual-beam photoelectric sensor pair designed for perimeter protection. It uses pulsed infrared beams to detect intrusion across long distances and provides a contact output to trigger alarms, gates or other security events when both beams are crossed simultaneously.

Who It Suits

Installers needing reliable outdoor detection up to 180 feet or indoor coverage up to 550 feet will appreciate the automatic gain control and built-in viewfinders for precise alignment. Buyers who want a self-contained alarm with a built-in siren, wireless connectivity or visible deterrent lighting should look at different sensor types that integrate those features.

Build Integration

Each unit requires a separate DC power supply between 12 and 24 volts and a separate alarm or control panel to act on the contact output. The weather-resistant housing and surge absorption circuit allow permanent outdoor mounting, freeing the installer from adding extra protective enclosures or surge protectors for the sensor itself.

Highlights

  • Dual-beam infrared detection covers 550 ft indoors
  • Outdoor range reaches 180 ft for perimeter protection
  • LED indicator enables precise beam alignment
  • Built-in viewfinders simplify optical axis adjustment
  • Operates on 12 V to 24 V DC power

Specifications

TypeAlarm Sensor
ColorBlack
Shipping weight1.81 kg
Package size305 × 254 × 254 mm

Questions about this item

What separate DC power supply does the 15-946-2 sensor pair require to operate?

The sensor pair requires a separate 12-volt DC or 24-volt AC power supply rated at 2 amps to function correctly.

How does the 550 ft indoor range of the 15-946-2 compare to typical older single-beam sensors?

The dual beam design provides greater stability and flexibility than single-beam sensors, reducing false alarms while covering up to 550 ft indoors.

How can I confirm the 15-946-2 beams are aligned correctly after installation?

Use the built-in viewfinders for optical axis adjustment and watch the LED indicator for fast, accurate fine beam alignment confirmation.

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