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Twin / PBS-15T



The PBS-15T is an infrared beam sensor with built-in light beacon and siren. The unit is designed to intimidate intruders by initiating high-intensity LED strobe lights and an electronic siren upon detection (Receiver only). Also ideal for protecting emergency doors in shopping centres/hospitals/public buildings etc. to prevent unauthorised use before activating related alarms.


  • Flashing Strobe Beacon and Siren activates upon Detection (RX only)
  • Day/Night Sensor
  • Auto-Gain Circuit
  • Adjustable Response Time



  • Specifications
  • Downloads

Model PBS-15T
Description Flash light siren beam
Detection distance Outdoor 50ft (15m) or less (Indoor 100ft (30m))
Max. arrival distance Outdoor Tenfold 500ft (150m)
Indoor Fivefold 500ft (150m)
Infrared beam Double modulation pulsed beam by LED
Detection system Simultaneous breaking of 2 beams
Response time 0.05sec. to 0.7sec. variable (Standard: 0.05sec.)
Supply voltage 10V to 18V DC (Non-polarity)
Current consumption Transmitter: 24mA / Receiver: 250mA
Day light Recognise it is night when surrounding environment is darker than the set illuminance.
Alarm output Dry contact relay output NO/NC selectable
Contact: 30V AC/DC 0.5A (Resistive load)
Contact action: Interruption time (Min. 2sec.)
Tamper output Dry contact output NC
Contact capacity: 30V AC/DC 0.1A
Flash light output Color: Red
Interruption time + Delay time (1min.)
Siren output Volume:
Silence to approx. 90dB/1m Variable with a volume
Siren timer:
5sec./20sec. selectable (One-shot operation)
Alarm LED Red LED (Receiver)
Lights when an alarm is initiated.
Attenuation LED Red LED (Receiver)
Lights when beam is attenuated.
Transmitting LED Green LED (Transmitter)
Lights when beam is transmitted.
Functions Frequency selectable for L or H,
AGC circuit, Frost proof cover
Ambient temperature range -13F to +140F (-25C to +60C)
Beam alignment adjustment Horizontal: +/-90 degrees
Installation Indoor/Outdoor
Wiring Terminals

Transmitter: 560g
Receiver: 620g

Appearance PC resin (wine red)

Instruction Manual