【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 with diffuser, can spread the light in a scientific manner
【Outdoor waterproof alarm siren】The shell is made of waterproof and dustproof steel plate. IP65 protection level. It can be used in any outdoor environment and suitable for any weather. Integrated circuit inside, strong anti-interference ability and stable performance    
【USB port】There is also USB port available. You can upload your own sound to the siren.  the amount of your own audio uploaded and the playback time of the audio depends on the size of the audio file, which cannot exceed 4MB! The maximum sound storage capacity of the alarm siren is 4MB!

Product Specification
Product：One Button Alarm Siren
Model：SLA-05BZ
Factory：YASONG ALARM 
Size：40.3×18.5×20.4 （Unit: cm）
Weight：4KG 
Material：Cold rolled steel and ABS
Voltage: DC12V/24V, AC110V/220V
Power：45W
IP rating：IP65 Waterproof and Dustproof
Tone：12（Long press button to adjust）
Volume：0-130 dB （Short press button to adjust） 
USB port：YES
Light way：LED Strobe 
Shade color：Red, Yellow, Green, Blue 
Installation method: wall mount 
Application: Lifting machinery, docks, factories, construction sites, security and electrical equipment