{"product_id":"yasong-laser-vehicle-height-detection-system-automatic-height-limit-warning-sensor-with-alarm-siren-for-tunnel-bridge-industrial-safety-applications-sla-pt8020","title":"YASONG Laser Vehicle Height Detection System Automatic Height Limit Warning Sensor with Alarm Siren for Tunnel, Bridge \u0026 Industrial Safety Applications SLA-PT8020","description":"\u003cp\u003e\u003cstrong\u003eWorking Principle:\u003c\/strong\u003e Adopting an invisible laser reflection positioning technology, the height limiter creates a “laser safety line” across the vehicle passage. It continuously detects the height of passing vehicles or obstacles. When the detected height exceeds the preset limit, the height limiter outputs a signal to the alarm device, triggering an audible and visual warning. This effectively prevents collisions with tunnels, bridges, and other height-restricted structures\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSelectable \u0026amp; Adjustable Detection Distance: \u003c\/strong\u003eSupports optional detection ranges of 0.5–10 m and 0.5–20 m, allowing users to select the suitable detection distance according to the actual road width and installation environment. The detection distance can be adjusted through RS485 communication commands or the calibration buttons on the height limiter to adapt to different site requirements. The installation height of the limiter can also be flexibly selected based on vehicle types, meeting the needs of various application scenarios\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEasy Installation \u0026amp; Calibration: \u003c\/strong\u003eThe height limiter features an automatic calibration function, allowing quick on-site setup without complicated tools. The built-in auxiliary red laser provides precise alignment, improving installation accuracy and reducing commissioning time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMulti-Device Linked Alarm System:\u003c\/strong\u003e The height restriction system supports switch signal output and wireless linkage, enabling connection with alarm devices, LED displays, and other equipment. It provides multi-level safety warnings, including audible and visual alarms, access control, and interception reminders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplication Scenarios:\u003c\/strong\u003e The alarm system features a powder-coated cold-rolled steel housing. The height limiter is rated IPX5 waterproof, while the alarm unit features IP65 protection. With a wide operating temperature range of -40°C to 70°C, the system is suitable for outdoor industrial environments such as tunnels, bridges, factories, logistics channels, and heavy vehicle access areas.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLaser Height Limit Detector Technical Parameters\u003c\/strong\u003e\u003cbr\u003eOperating Voltage:    DC12V \/ AC220V\u003cbr\u003eStandby Power:0.5W\u003cbr\u003eOperating Power:3W\u003cbr\u003eAlarm Indication Mode:    Buzzer \/ Linked Device Alarm\u003cbr\u003eHousing Material: Cold Rolled Steel\u003cbr\u003eDetection Accuracy:±5cm (within 5m); 1% (≥5m)\u003cbr\u003eMounting Method: Clamp Mount \/ Wall Mount\u003cbr\u003eIngress Protection Rating: IPX5\u003cbr\u003eOperating Temperature:-40℃ ~ 70℃ \u003cbr\u003eOperating Humidity: ≤95% RH\u003cbr\u003eDetection Range|: 0.5~10m or 0.5~20m\u003cbr\u003eactory Default Detection Range: 0.5m ~ 2.5m\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSound \u0026amp; Light Alarm Technical Parameters\u003c\/strong\u003e\u003cbr\u003eOperating Voltage：DC12V\/24V; AC110V\/220V\/380V (Optional)\u003cbr\u003eMax Power：25W\u003cbr\u003eSound Level：0-120dB\u003cbr\u003eAlarm Mode：Trigger sound and light alarm upon receiving signal from height limit detector\u003cbr\u003eAlarm Voice：Customizable voice per application\u003cbr\u003eIP Rating：IP65\u003cbr\u003eMaterial：Housing: Cold Rolled Steel; Lamp Shade: PS Plastic\u003cbr\u003eOperating Temperature：-40℃ ~ 70℃\u003cbr\u003eOperating Humidity：≤95% RH\u003cbr\u003eMounting Method：Wall Mount\u003cbr\u003eVolume Adjustable Knob：Clockwise turn: louder sound; Counter-clockwise turn: quieter sound\u003cbr\u003eVoice Replacement Function：Support voice file update via external USB male cable\u003c\/p\u003e","brand":"YASONG Alarm","offers":[{"title":"DC12V \/ 10meters","offer_id":49103515943067,"sku":null,"price":286.0,"currency_code":"USD","in_stock":true},{"title":"DC12V \/ 20meters","offer_id":49103515975835,"sku":null,"price":348.0,"currency_code":"USD","in_stock":false},{"title":"AC110 \/ 10meters","offer_id":49103516008603,"sku":null,"price":286.0,"currency_code":"USD","in_stock":true},{"title":"AC110 \/ 20meters","offer_id":49103516041371,"sku":null,"price":348.0,"currency_code":"USD","in_stock":true},{"title":"AC220V \/ 10meters","offer_id":49103516074139,"sku":null,"price":286.0,"currency_code":"USD","in_stock":true},{"title":"AC220V \/ 20meters","offer_id":49103516106907,"sku":null,"price":348.0,"currency_code":"USD","in_stock":true},{"title":"AC380V \/ 10meters","offer_id":49103516139675,"sku":null,"price":286.0,"currency_code":"USD","in_stock":true},{"title":"AC380V \/ 20meters","offer_id":49103516172443,"sku":null,"price":348.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/9052\/3547\/files\/6391ace427ade714b70fb966024ae804_24a46d85-6f96-42a6-a190-d82f5d233d26.jpg?v=1785130720","url":"https:\/\/yasongalarm.com\/products\/yasong-laser-vehicle-height-detection-system-automatic-height-limit-warning-sensor-with-alarm-siren-for-tunnel-bridge-industrial-safety-applications-sla-pt8020","provider":"YASONG Alarm ","version":"1.0","type":"link"}