Alarm Siren with Button Control Box 130dB Horn 12 Tones Adjustable 45w Emergency Alarm Systerm Strobe Siren for Farm Factory Harbor Dock SLA-05BZ

【Operating Principle】Button control box to control the siren on or off.   After the siren wires and thebutton box wires are connected, when power on, the siren is in standby.   Press any button on the button box, all the sirens will start to sound and light alarm;   press any button on the button box again, all the alarms will stop working. （If you do not know how to wire, you can contact us and we will solve for you）    【Adjustable volume and tone】The volume tone can be adjusted, 0-130dB adjustable alarm, you can select the volume according to your own needs;   The alarm has 12 built-in sounds and you can change the sound of the alarm via the button on the alarm. There is also USB port available, you can upload your own sound to the siren    【Alarm siren with strobe light】Once activated there will be red flashing warning light at the same time with the tone, obvious and easy to attract attention;  bright LED beads with low power consumption and long service life.  Also it is designed