YASONG SLA-PT8020 Laser Vehicle Height Detection System, 10m/20m Range, Auto Calibration, 120dB Alarm, IPX5/IP65
Confirm the detector voltage, alarm-unit voltage, detection range, mounting method, and linkage version before ordering. Installation, wiring, and grounding must be completed by qualified personnel, and the laser path must remain clear of obstructions.
Product Overview
The YASONG SLA-PT8020 vehicle height detection system creates an invisible laser safety line across a passage and continuously monitors approaching vehicles or obstacles. When a target enters the preset detection zone, the detector keeps the alarm output active until the target leaves, helping prevent overheight collisions at tunnels, bridges, and industrial entrances.
Choose the 0.5โ10m or 0.5โ20m detector version. Automatic calibration sets the upper detection limit after the measured distance remains stable for 10 seconds, with a 0.1m safety margin. The system supports passive switch output and optional 433MHz wireless linkage.
- Automatic calibration with a visible red alignment laser
- Detection accuracy: ยฑ5cm below 5m and 1% at 5m or more
- Up to 120dB adjustable sound and light alarm
- IPX5 detector and IP65 alarm unit for demanding environments
- Clamp or wall mounting for different installation layouts
Select the correct detector voltage, alarm voltage, detection range, mounting method, and linkage version before ordering. Professional installation and grounding are required; keep the laser path clear and do not mount the sensing module facing upward.
Key Specifications
Quickly compare the most important details before ordering.
Product Highlights
Key features that help you decide whether this model fits your use.
Invisible Laser Safety Line
The detector uses laser reflection positioning to establish an invisible clearance line across the passage. When a vehicle or obstacle enters the configured detection zone, the system activates the alarm output.
Automatic Distance Calibration
Press and hold the calibration button for at least three seconds to begin automatic calibration. After the measured distance remains stable for 10 seconds, the detector sets the upper detection limit 0.1m below the measured distance as a safety margin.
Flexible Alarm Linkage
The system supports passive dry-contact output for linked warning lights, alarms, displays, gates, and other equipment. An optional 433MHz wireless version is available for compatible remote alarm linkage.
Adjustable 120dB Warning
The linked sound and light alarm provides an adjustable output of up to 120dB. Alarm voice files can be replaced through an external USB male cable for different warning applications.
Outdoor Installation Options
The detector supports clamp or wall mounting and uses a visible red auxiliary laser for installation alignment. The detector measures approximately 252.7 ร 156 ร 81.5 mm and operates from -40ยฐC to 70ยฐC.
Full Product Specifications
Detailed specifications for installation, comparison and compatibility checks.
- Product Type
- Laser Vehicle Height Detection and Alarm System
- Input Voltage
- Height detector: DC12V or AC220V; sound and light alarm: DC12V/24V or AC110V/220V/380V
- Power
- Height detector: 0.5W standby and 3W operating; sound and light alarm: 25W maximum
- Sound Level
- 0โ120dB
- Tone
- Customizable alarm voice; number of tones is not specified
- Volume Adjustment
- Adjustable from 0โ120dB using the volume knob; clockwise increases volume and counter-clockwise decreases volume
- Alarm Mode
- Built-in buzzer, linked sound and light alarm, passive switch output, or optional 433MHz wireless alarm linkage
- Trigger Mode
- Triggered when a vehicle, person, or obstacle enters the configured detection zone between the fixed 0.5m lower limit and the calibrated upper detection limit
- Control Mode
- Calibration button and RS485 distance adjustment; passive dry-contact output or optional 433MHz wireless linkage
- Work Mode
- Continuous laser distance monitoring; the alarm output remains active until the detected target leaves the configured detection range
- Lighting Mode
- Triggered visual warning from the linked alarm unit; the detectorโs red sensing indicator flashes continuously during an alarm
- Protection Rating
- Height detector: IPX5; sound and light alarm: IP65
- Installation Method
- Height detector: clamp mount or wall mount; sound and light alarm: wall mount
- Operating Temperature Range
- -40ยฐC to 70ยฐC
- Working Humidity
- โค95% RH
- Material
- Height detector: powder-coated cold-rolled steel; alarm housing: cold-rolled steel; lamp shade: PS plastic
- Net Weight
- 10kg
- Remote Control Function
- Optional 433MHz wireless linkage to compatible alarm equipment; no handheld remote control is specified
- Detection Range
- 0.5โ10m for the PT8020-1 version or 0.5โ20m for the PT8020-2 version; factory default detection window: 0.5โ2.5m
- USB Interface
- Supports alarm voice file updates through an external USB male cable
- Typical Application Scenarios
- Highway tunnels, urban underpasses, road bridges, factory entrances, logistics passages, loading areas, heavy vehicle access lanes
- Tips
- Confirm the detector voltage, alarm-unit voltage, detection range, mounting method, and linkage version before ordering. Installation, wiring, and grounding must be completed by qualified personnel, and the laser path must remain clear of obstructions.
- Customization
- Custom alarm voice updates through an external USB cable. Optional configurations include 10m or 20m detector versions, clamp or wall mounting, voltage choices, passive switch output, and 433MHz wireless linkage.
Need help choosing the right model?
Tell us your voltage, installation location and how you want the alarm or warning light to work. We will help you check a suitable option before you order.
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