Dahszhi Dual Laser Detector Infrared Beam Sensor

The Dahszhi Dual Laser Detector is a two-beam infrared perimeter sensor that reliably detects simultaneous beam interruptions for indoor ranges up to 300m and outdoor ranges up to 60m.

Designed for mounting opposite transmitter and receiver units, this compact laser alarm beam sensor delivers focused infrared pulses and automatic alignment to simplify setup and reduce false triggers. It connects to most alarm panels via relay contacts (NO/NC) and tolerates wide temperature and humidity ranges, making it suitable for yards, building perimeters, corridors, and restricted zones.

How does the two-beam detection work and why does it reduce false alarms?

This model requires both infrared beams to be interrupted simultaneously before signaling an alarm, greatly lowering nuisance alerts from animals, debris, or weather. The detectors use pulsed infrared optics and built-in lensing to keep the beam stable and strong across the rated distance.

• Two-beam simultaneous-trip logic for selective detection
• Pulsed infrared source with lensed optics for beam integrity
• Automatic power adjustment to maintain reliable signal across changing conditions
• Immunity features that help against rain, snow, and mist

What are the installation limits and environmental tolerances?

Place the transmitter and receiver directly opposite each other. Indoor line-of-sight range reaches up to 300 meters, whereas outdoor installations are rated up to 60 meters depending on conditions. The unit is built to operate across a broad temperature and humidity window for year-round use.

• Indoor maximum separation: 300 m; outdoor maximum: 60 m
• Operating temperature: -25 °C to 55 °C
• Operating humidity: 5%–95% RH
• Response speed adjustable between 50 and 700 ms

What power, outputs, and connections are required?

The detector accepts DC or AC power within the specified ranges and provides relay outputs suitable for most alarm control panels. It is designed for easy wiring to existing security systems and includes mounting hardware to get the transmitter and receiver aligned properly.

• Power supply: DC 13.8–24V or AC 11–18V, P ≥ 15W
• Relay contact outputs: Normally Open (NO) and Normally Closed (NC)
• Contact rating: AC/DC 30V, 0.5A max
• Includes installation screws and instruction manual

How is alignment and maintenance handled to keep the beam accurate?

The Dahszhi detector includes a built-in laser alignment aid to speed setup and ensure accurate aiming between transmitter and receiver. The unit also supports automatic transmit power adjustment that compensates for environmental changes, which extends component life and lowers maintenance frequency.

• Integrated laser alignment system for quick aiming
• Automatic transmit power control to adapt to conditions
• Self-check and environment-adaptive functions for stable operation
• Simple periodic checks recommended for long-range outdoor runs

Who is this for: Security integrators, facilities managers, and homeowners looking for a durable, low-false-alarm perimeter detector will find the Dahszhi Dual Laser Detector well suited to fenced yards, building approaches, corridors, and restricted-access areas. It fits installations that require long detection ranges, reliable alignment tools, and straightforward relay interfacing to existing alarm systems.