BC-8Q sound and light alarm& nbsp;  The shell is made of aluminum alloy pressure casting, with a beautiful and novel structure, light weight, and good corrosion resistance& nbsp;  Good sealing performance and excellent waterproof and dustproof function& nbsp;  The lamp tube is made of light-emitting diodes, with a service life of over 100000 hours& nbsp;  The lampshade is made of PC material, which has particularly good impact strength, thermal stability, and glossiness& nbsp;  Integrated chip design, *'s electromagnetic anti-interference performance& nbsp;  Multiple tone and voice options, with adjustable volume for a wide range of applications& The main technical parameters of the BC-8Q sound and light alarm are working voltage AC24V/AC36V/AC110V/AC220V/AC380V/DC24V (special voltage can be customized), power frequency 50Hz~60Hz power& nbsp;   Rate 6W tones& nbsp;   Tone A/B/E/D/Y/L/F/Voice (optional)& nbsp;   106dB level appearance& nbsp;   Red, yellow, and green (optional) warning methods: sound and light; Working temperature -30 ° C? C~+70? C protection level IP65, working humidity 10%~95% (non condensing), reference weight 2.7Kg, material shell: aluminum alloy& nbsp;  Lampshade: PC& nbsp;  How to install and use it& nbsp;  Should the power supply match the rated voltage of the buzzer& nbsp;  Install vertically with the horn facing downwards& nbsp;  The buzzer should be fixed to the mounting surface with 4 M8 screws, and the mounting surface should be flat and have sufficient mechanical strength& nbsp;  Unscrew the two screws on the nameplate cover plate, remove the cover plate, and expose the wiring terminal block& nbsp;  Connect the power and control wires from the waterproof joint of the cable, and correctly connect them according to the terminal definitions on the label& nbsp;  Check that the power cord and other control cables are connected correctly before starting the power supply& nbsp;  Rotate the volume adjustment potentiometer to adjust the volume& nbsp; Selection Guide Model Regular Tone Volume Adjustment Other BC-8D/BC-8XD Adjustable/BC-8QA/B Adjustable/BC-8UA/B/BC-8SD/B/BC-8YD/Y/BC-8HD/A/BC-8KD/E/BC-8CB/E Adjustable/BC-8MD Adjustable External Switch BC-8TD/Sound and Light Separation Control BC-8PD/Strobe