YASONG Alarm Siren with Button Control Box 130dB Horn 45w Emergency Alarm Systerm Strobe Siren for Farm Factory Harbor Dock SLA-05AZ

【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） 【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 with diffuser, can spread the light in a scientific manner 【Loud Horn】The alarm bell uses high-quality alloy speakers, the default siren sound is 130 decibels, and the volume &  tone is not adjustable. If you want to customize the alarm voice, please contact us. 【Outdoor waterproof alarm siren】The shell is made of waterproof a