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Laser Structural Movement Telemeter YZ-120
Laser-Based Building Movement & Collapse Warning Alarm for Urban Search and Rescue Teams
WHY CHOOSE THE LSJ YZ-120
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Description
What Is the LSJ YZ-120 Structural Monitoring System?
The LSJ YZ-120 is an advanced movement monitoring system purpose-built for unstable structures. Using precision laser ranging and inclination detection, it tracks the slightest shifts in ground, columns and walls during fire response and rescue operations, and triggers a powerful sound-and-light alarm the moment a pre-set movement threshold is exceeded — so rescue teams can evacuate to safety before a secondary collapse.
Figure: The complete LSJ YZ-120 kit: tripod-mounted laser measurement host, linked wireless sound-and-light alarm nodes and a rugged protective transit case, deployed beside an unstable structure.
The integrated kit combines the laser measurement host, tripod-mounted for rapid deployment, linked wireless alarm nodes and a rugged hard-shell carry case — everything a rescue team needs to establish a structural safety perimeter on arrival.
Which Risks Does the YZ-120 Address?
After fires, earthquakes, explosions, collapses and landslides, damaged buildings can continue to move without warning. Secondary collapses are among the most lethal hazards facing rescue personnel, yet millimeter-scale displacement and tilt are invisible to the naked eye and impossible to judge by sight alone. Commanders need continuous, objective measurement and an unmistakable evacuation signal — not periodic visual checks.
How the YZ-120 Protects Rescue Teams
The YZ-120 — also named the Warning Alarm for Structural Protection — uses laser ranging to monitor slight movement and inclination angles across building walls, columns and ground. Powered by wireless background-control technology, one system integrates power display, distance measurement, angle display, alarm monitoring, monitoring-gear adjustment and wireless transmission. If movement crosses the pre-set threshold, both the host and external sound-and-light alarms activate, delivering rapid, accurate information that directly improves safety and operational efficiency.
Figure: External wireless sound-and-light alarm node fixed to a structural column: the red strobe activates automatically when the monitored displacement or inclination threshold is exceeded.
Nine capabilities in one system:
- Integrated displacement and inclination monitoring combines both measurements for complete structural analysis.
- 360-degree stereoscopic monitoring delivers all-round coverage with no blind spots.
- Advanced wireless background-control technology enables seamless control and data transmission.
- Multi-stage stepless accuracy adjustment matches monitoring precision to each scene.
- Dual-mode positioning supports both BeiDou and GPS.
- Automatic audio and visual alarm alerts rescue teams the instant a threshold is crossed.
- Real-time online status display maintains immediate situational awareness.
- 100-meter detection range covers large and hazardous work areas from a safe stand-off distance.
- External sound-and-light alarm supports linked alarms and reverse one-key search and positioning monitoring at each inclination angle.
Application Fields
The YZ-120 is built for the scenes where structural stability can no longer be trusted: house collapse, building collapse, earthquake collapse and explosion incidents, as well as landslides and post-fire structural monitoring.
Figure: Core application fields of the LSJ YZ-120: house collapse, building collapse, earthquake collapse and explosion response.
In live urban search-and-rescue operations, crews set the YZ-120 on its tripod facing the unstable structure and place wireless alarm nodes at the columns, walls or vantage points that define the safety perimeter, allowing monitoring to continue while search, shoring and debris-removal work proceeds.
Figure: Field deployment of the LSJ YZ-120 at a cordoned earthquake collapse site during urban search-and-rescue operations.
Built by LSJ — Proven in Global Rescue Operations Since 2013
LSJ is a global enterprise integrating research, development and production of rescue technology, and LSJ structural monitoring systems have played a role in rescue missions since 2013. In-house manufacturing means controlled quality, consistent supply and documentation that procurement and tender teams can rely on.
Figure: LSJ in-house assembly, quality control and case preparation for structural monitoring alarm units.
Compliance documentation for procurement and tenders: each YZ-120 shipment is supported by the documentation below — including a lithium-battery MSDS that simplifies international freight.
Figure: LSJ compliance documentation: CE (LVD/EMC) attestation, ISO 9001:2015 certification, battery MSDS report and RoHS attestation.
LSJ presents its rescue-technology portfolio to international fire and rescue buyers at leading industry exhibitions, including INTERSEC Dubai, MIPS Russia, IFCEM Malaysia and NFPA USA — evidence of a global customer base and sustained investment in rescue safety.
Figure: LSJ at international rescue and safety exhibitions: INTERSEC Dubai, MIPS Russia, IFCEM Malaysia and NFPA USA.
Frequently Asked Questions
QWhat is the LSJ YZ-120 structural monitoring system?
A: The LSJ YZ-120 is a laser-based structural displacement monitoring and warning system for unstable buildings. It combines laser ranging with inclination sensing to track movement of the ground, columns and walls during fire response, urban search and rescue, earthquake, explosion, collapse and landslide operations, and triggers automatic sound-and-light alarms when movement exceeds a preset threshold.
QHow does the YZ-120 warn rescue teams about building movement?
A: The system continuously measures displacement and inclination in the background. Once structural movement exceeds the operator-defined threshold, the host and its external wireless sound-and-light alarm nodes activate simultaneously, giving teams an immediate, unmistakable evacuation signal.
QWhat is the detection range of the LSJ YZ-120?
A: The YZ-120 monitors structures at distances of up to 100 meters, with 360-degree stereoscopic coverage so that movement around the work zone is not missed.
QDoes the YZ-120 monitor both displacement and inclination?
A: Yes. It integrates displacement and inclination monitoring in one system, with multi-stage stepless accuracy adjustment that lets crews set the appropriate sensitivity for each incident.
QWhich satellite positioning systems does the YZ-120 support?
A: The YZ-120 supports dual-mode positioning through both BeiDou and GPS for enhanced positioning accuracy.
QIn which emergency scenarios is the YZ-120 used?
A: It is used at structural fires, house and building collapses, earthquake rubble, explosion scenes and landslides — anywhere ground, columns or walls may continue to move while rescue personnel work nearby.
QDoes on-site installation require fixed infrastructure or cabling?
A: No. The laser measurement host deploys on a tripod, and the external alarm nodes mount directly onto columns, walls or ground-level structural elements. Wireless background control and data transmission remove the need for site cabling, and the built-in rechargeable lithium-ion battery shows its level on screen.
QWhat compliance and shipping documentation is provided?
A: LSJ supplies CE (LVD and EMC) attestation, ISO 9001:2015 certification, a lithium-battery MSDS and RoHS attestation. The MSDS supports air- and sea-freight arrangements for the battery-powered kit.
QWho manufactures the YZ-120, and what field experience stands behind it?
A: The manufacturer is Beijing LSJ Technology Development Co., Ltd., a global rescue-technology enterprise integrating R&D and production. LSJ monitoring systems have taken part in rescue missions since 2013 and have been exhibited at INTERSEC Dubai, MIPS Russia, IFCEM Malaysia and NFPA USA.
Discuss your department’s requirements with the LSJ team: use the inquiry form to request a quotation, tender documentation and the full YZ-120 technical dossier, and an LSJ rescue-equipment specialist will respond shortly.
