YASONG SLA-01HZ 120dB Button Control Alarm Siren, 25W, IP65, USB Upload, LED Strobe, One-Button Linkage Voltage:DC24V a plastic sprayed steel plate

a plastic sprayed steel plate shell

and 3 included remote controllers for outdoor industrial and security alerts

120dB adjustable sound controlled by side buttons

24mils( No obstacle blocking)

and the tone

YASONG SLA-01HZ 120dB Button Control Alarm Siren, 25W, IP65, USB Upload, LED Strobe, One-Button Linkage Voltage:DC24V a plastic sprayed steel plateThe YASONG SLA 01HZ button control alarm siren combines a 0120dB adjustable horn with a red LED strobe warning light for schools, factories, farms and outdoor security areas. This model works by one button linkage control: after the siren and button box are wired and powered on, pressing any button starts all connected sirens, and pressing any button again stops the alarms. Button control box for simple alarm on off operation 0120dB adjustable volume