DDSK-J Outdoor Laser Beam Detector

Name: DDSK-J Outdoor Laser Beam Detector
Brand: DAIDISIKE
SKU: ddsk-j-outdoor-laser-beam-detector
Availability: InStock

Single beam pair secures up to 500 m of straight outdoor perimeter, IP67-rated with visible or invisible laser options.

DDSK-J Outdoor Laser Beam Detector - product photo

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Technical Specifications

Output type	Relay dry contact (volt-free), N.O./N.C. selectable
Contact rating	AC 125V/0.5A; DC 24V/1A max
Detection range	100 / 200 / 300 / 500 m selectable
Response time (beam interruption time)	50 / 100 / 300 / 700 ms selectable
Laser wavelength	660nm visible red / 980nm invisible infrared selectable
Laser class	Class 1 (eye-safe)
Optical axis adjustment	±15°
Operating voltage	DC 9-30V or AC 9-20V
Ingress protection rating	IP67
MTBF (mean time between failures)	> 150,000 hours

Overview

DDSK-J is a through-beam (transmitter/receiver pair) outdoor laser intrusion detector for perimeter protection. It is intended for security integrators and end users who need to cover long, straight boundary lines — factory and warehouse perimeter walls, solar farm and substation fence lines, and other outdoor sites — with fewer poles and wiring points than conventional active-infrared beam systems typically require at long range.

Model DDSK-J1001 is a configurable unit: detection range, response time, laser wavelength and relay output polarity are selected to match the site. It offers a selectable detection range of 100, 200, 300 or 500 meters, a choice of 660 nm visible red laser or 980 nm invisible infrared laser (both Class 1, eye-safe), and a four-step selectable response time of 50, 100, 300 or 700 milliseconds.

Features & Benefits

Up to 500 m Coverage from a Single Beam Pair

Selectable detection range of 100/200/300/500 m lets one transmitter-receiver pair secure a straight perimeter run as long as 500 m, which can reduce the number of poles, wiring points and alarm zones needed compared with the manufacturer's own JNS infrared beam series (max 250 m at model JNS4-250S).

Choice of 660 nm Visible or 980 nm Invisible Laser

660 nm visible red laser makes the beam spot visible during alignment, speeding up installation over long distances; 980 nm invisible infrared laser keeps the beam hidden from view for covert perimeter protection. Both are Class 1 (eye-safe).

Four-Step Selectable Response Time (50/100/300/700 ms)

Installers can tune sensitivity on site: a fast setting catches running or fast-climbing intruders, while a slow setting rides through momentary obstructions such as birds or falling leaves to reduce nuisance alarms.

±15° Optical Axis Adjustment

Mechanical beam alignment tolerance of ±15° simplifies pointing the beam over long spans and tolerates poles that are not perfectly plumb or aligned.

IP67-Rated Enclosure

Dust-tight and rated for temporary immersion, one class above the IP65 rating common on outdoor beam detectors (including the manufacturer's own JHW solar wireless infrared detector series), suited to permanent exposed-pole installation in heavy rain and dust.

Volt-Free Relay Output, N.O./N.C. Selectable

Dry-contact relay output (AC 125V/0.5A, DC 24V/1A max) has no polarity or voltage-matching requirements, so it interfaces directly with alarm control panels, access controllers or PLCs from any brand.

Wide-Range Power Input, DC 9-30 V or AC 9-20 V

One model accepts both DC alarm-panel power and low-voltage AC site supplies, reducing the need for extra transformer or rectifier accessories on site.

MTBF Greater Than 150,000 Hours

Rated mean time between failures exceeds 150,000 hours, supporting continuous always-on perimeter monitoring.

Applications

Factory and Warehouse Perimeter Walls — These boundaries are typically long straight lines, so the DDSK-J1001's up-to-500-m coverage from a single beam pair can significantly cut the number of poles and alarm zones needed.

Solar Farm and Substation Boundary Protection — Unmanned solar farms and substations often have long, open, straight perimeters where the 500 m detection range, IP67 outdoor rating and DC/AC power flexibility fit on-site supply conditions.

Water Treatment Plant and Unmanned Infrastructure Sites — Similar unmanned facilities need continuous perimeter monitoring, supported by the DDSK-J1001's MTBF of over 150,000 hours and IP67 protection.

Airport and Seaport Long Straight Fence Lines — Very long, open boundaries can be locked down in straight runs using the maximum 500 m detection range, with ±15° optical axis adjustment easing alignment over long spans.

Estate and Villa Perimeter (Covert Protection) — Sites that require discreet protection, where intruders should not be able to spot the beam position, can select the 980 nm invisible infrared wavelength.

Rooftop and Terrace Edge Intrusion Detection — Rooftop and terrace edge climb-over detection is supported by the adjustable response time and a relay output that connects easily to a building's alarm system.

Sites Requiring Integration with Existing Alarm Panels or PLCs — Projects that must integrate with a third-party alarm panel or PLC can use the volt-free dry-contact relay output, selectable N.O. or N.C., with no polarity or voltage-matching issues.

Models & Ordering Information

DDSK-J Series

DDSK-J1001

DDSK-J1001 is a single configurable model: detection range (100/200/300/500 m), response time (50/100/300/700 ms), laser wavelength (660 nm visible / 980 nm invisible) and relay output polarity (N.O./N.C.) are selected as options under this one model number; the source documentation does not list separate suffix model numbers for each configuration.

How to Select

Detection range: choose 100, 200, 300 or 500 m to match the straight boundary length, allowing installation margin and confirming an unobstructed line of sight between transmitter and receiver.
Beam wavelength: choose 660 nm visible red laser for faster on-site alignment with a visible beam spot, or 980 nm invisible infrared laser for covert protection where the beam should not be visible; both are Class 1 (eye-safe).
Response time: choose a faster setting (toward 50 ms) to catch quick intrusions such as running or climbing, or a slower setting (toward 700 ms) in environments with birds or blowing leaves to reduce nuisance alarms, adjusting among the 50/100/300/700 ms steps based on site testing.
Relay output polarity: select N.O. or N.C. to match the zone input logic of the connected alarm panel, access controller or PLC, keeping contact load within AC 125V/0.5A or DC 24V/1A max.
Power supply: confirm whether the site provides DC alarm-panel power (DC 9-30 V) or low-voltage AC supply (AC 9-20 V); the DDSK-J1001 accepts either without additional model selection.
Optical axis alignment tolerance: where pole foundations cannot be made perfectly vertical or aligned, the ±15° optical axis adjustment provides installation margin, though accurate pole installation is still recommended to minimize alignment work.

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When NOT to specify the DDSK-J — and what to use instead

Machine safety guarding -- e.g., protecting a robot cell or press danger zone where a certified electro-sensitive protective device (ESPE) is required

Why not: DDSK-J1001 is documented only as an outdoor perimeter intrusion/security beam with a volt-free relay output and a Class 1 eye-safe laser rating; no machine-safety ESPE certification is cited anywhere in the source material, and the product is marketed for perimeter security, not machine safeguarding.

Use instead: A certified safety-rated light curtain / ESPE from DAIDISIKE's safety light curtain product line for machine guarding applications.

The site has persistent fog, heavy rain, or an obstructed line of sight between poles

Why not: The system is a through-beam pair that the selectionGuide instructs installers to confirm has an unobstructed line of sight over the selected straight range (100/200/300/500 m); no fog- or rain-derated visibility figures are documented.

Use instead: A site survey to confirm sight-line and weather conditions, plus a shorter selected range or additional pole spacing where needed.

The perimeter has curves or significant grade changes rather than a straight run

Why not: Applications are documented specifically for long, straight boundary lines (perimeter walls, fence lines) covered by one beam pair.

Use instead: Multiple DDSK-J1001 pairs positioned along each straight segment of the boundary.

The perimeter must resist an intruder climbing over or crawling under a single beam line

Why not: DDSK-J1001 is documented as a single through-beam transmitter/receiver pair; the source material does not confirm a multi-beam-per-pole configuration (see dataGaps), so one beam at one height can be defeated by climbing over or crawling under it.

Use instead: Stack multiple DDSK-J1001 pairs at different heights on the same poles for climb/crawl-under resistance.

Specifications we do not publish yet

We only publish a figure once we are confident it is true. The items below are still being validated through further testing and real-world customer feedback, so for now we would rather leave them open than guess. If one of them matters to your design, ask us for the latest validated status.

Whether a 433 MHz wireless output option exists is unconfirmed -- referenced on a category page but not on the product detail documentation
Beam configuration -- whether each pair is single-beam or supports multi-beam (2/3 beam) blocking modes with a stated beam spacing -- is inconsistent across source documents and unresolved
The laser safety standard/certificate number behind the stated "Class 1" rating (e.g., IEC 60825-1) is not cited
Operating temperature range is not documented
Overall unit dimensions and housing material are not documented
Detection accuracy/tolerance figures are not documented

Frequently Asked Questions

What is the maximum perimeter length a single DDSK-J1001 pair can cover?

DDSK-J1001 offers four selectable detection ranges — 100, 200, 300 and 500 m — so a single transmitter-receiver pair can cover up to 500 m of straight, unobstructed perimeter.

What is the difference between the 660 nm and 980 nm laser options?

The 660 nm option is a visible red laser, which makes the beam spot visible to installers during alignment. The 980 nm option is an invisible infrared laser, keeping the beam hidden for covert perimeter protection. Both are Class 1 (eye-safe) lasers.

Is the DDSK-J1001 laser safe for the human eye?

The laser is rated Class 1 (eye-safe). Certification documents are available on request.

How does the adjustable response time help reduce false alarms?

Response (beam interruption) time is selectable across four steps — 50, 100, 300 and 700 ms. A faster setting is more sensitive to quick intrusions such as running or climbing, while a slower setting ignores brief obstructions like a bird flying through the beam or a falling leaf, helping installers balance sensitivity against nuisance alarms for the specific site.

What output does the DDSK-J1001 provide, and how do I connect it to my alarm panel?

It provides a volt-free (dry contact) relay output, selectable as normally open (N.O.) or normally closed (N.C.), rated AC 125V/0.5A or DC 24V/1A max. Because it is a dry contact with no polarity requirement, it can be wired directly into the input of most alarm control panels, access controllers or PLCs.

What power supply does the DDSK-J1001 require?

It accepts DC 9-30 V or AC 9-20 V, so the same unit can be powered from a typical DC alarm-panel supply or a low-voltage AC site supply without additional conversion equipment.

What environmental protection rating does the DDSK-J1001 have?

It is rated IP67 — dust-tight with protection against temporary immersion — suitable for permanent outdoor pole-mounted installation.

How much beam misalignment can the optical axis adjustment tolerate?

The optical axis can be mechanically adjusted by ±15°, providing tolerance for poles that are not perfectly vertical or perfectly aligned with each other.

Does the DDSK-J1001 have a wireless output option?

A 433 MHz wireless output has been referenced on a category page but is not confirmed on the product detail documentation. Please contact us to confirm wireless output availability before specifying it.

What is the rated reliability (MTBF) of the DDSK-J1001?

The rated mean time between failures (MTBF) is greater than 150,000 hours.

Works Well Together

On the same machine or line, DDSK-J is typically ordered together with: LiDAR Scanners · Laser Distance Sensors · Relay & Timer Modules