The application field of BC-8AV acousto-optic electronic buzzer is applicable to all kinds of lifting machinery (tire crane, crawler crane, crane, etc.), port machinery (gantry crane, bridge crane, etc.), plant (electrical box), metallurgy, chemical industry, mining, marine engineering ships, etc& nbsp; Main functions and features&bull& nbsp;  The shell is made of aluminum alloy pressure casting, with a beautiful and novel structure, light weight, and good corrosion resistance& bull;   Good sealing performance and excellent waterproof and dustproof function& bull;   The lamp tube is made of light-emitting diodes, with a service life of over 100000 hours& bull;   The lampshade is made of PC material, which has excellent impact strength, thermal stability, and glossiness& bull;   Integrated chip design with excellent electromagnetic anti-interference performance& bull;   Multiple tone and voice options, with adjustable volume for a wide range of applications& nbsp; Main technical parameters: 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 F-style sound and light  Working temperature -30 ° C? C~+70 ° C protection level IP65, working humidity 10%~& nbsp;95%  (Non condensing) Reference weight 2.7Kg Material shell: Aluminum alloy& nbsp;  Lampshade: PC& nbsp;  Installation and usage methods&bull& nbsp;  It is necessary to check whether the rated voltage of the power supply and the buzzer match& bull;   Install vertically with the horn facing downwards& bull;   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& bull;   Unscrew the two screws on the nameplate cover plate, remove the cover plate, and expose the wiring terminal block& bull;   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& bull;   Check that the power cord and other control cables are connected correctly before starting the power supply& bull;   Rotate the volume adjustment potentiometer to adjust the volume. Attention: When the system is powered on and the product does not work or is not working properly, please check whether the power supply terminal and volume adjustment terminal are connected correctly. If there is no sound, please check the volume adjustment switch. If you have any other questions, please contact our company. Please make sure to install and use this product correctly according to the above methods. BC-8AV acoustic optoelectronic buzzer