YASONG SLA-S001 130dB Portable Highway Maintenance Alarm Siren, 100W, 20Ah Battery, Red Blue Strobe Plug-in Alarm Sirens 0–120dB adjustable siren for different

0–120dB adjustable siren for different warning needs

IP65 protection for outdoor use

as the page shows both power-on trigger and remote-control trigger information

This model works by power-on operation: the alarm starts when powered on

YASONG SLA-S001 130dB Portable Highway Maintenance Alarm Siren, 100W, 20Ah Battery, Red Blue Strobe Plug-in Alarm Sirens 0–120dB adjustable siren for differentThe YASONG SLA S001 portable highway maintenance alarm siren is designed for road work, highway maintenance, tunnel construction, emergency rescue sites and temporary outdoor safety warning areas. This model combines a 300W maximum power alarm system, 130dB adjustable sound, red and blue LED strobe warning lights and a built in rechargeable lithium battery. It supports portable movement with a handle and pull rod structure, making it suitable for