YASONG SLA-PT8020 Laser Vehicle Height Detection System, 10m/20m Range, Auto Calibration, 120dB Alarm, IPX5/IP65 Voltage:DC12V This model stays in standby

This model stays in standby mode after power-on and triggers the siren when people

so it should be installed in a protected location

The YASONG SLA-800W is a motion detector alarm siren with a 120dB adjustable loudspeaker

The YASONG SLA-800BW is a portable rechargeable motion sensor alarm siren with a 120dB loud horn

so please confirm the voltage and warning setup before ordering

YASONG SLA-PT8020 Laser Vehicle Height Detection System, 10m/20m Range, Auto Calibration, 120dB Alarm, IPX5/IP65 Voltage:DC12V This model stays in standbyThe 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. 510m or 0. 520m detector version. Automatic calibration sets the