The BJ-12 sound and light alarm multi-purpose alarm is a product developed by our company based on the actual situation of large and medium-sized driving in the port machinery, metallurgy, and electromechanical industries. This product has the advantages of small size, novel appearance, simple operation, convenience and practicality. After practical use, various tone alarm prompts have played an important role in coordinating work, equipment alarms, and protecting personal safety. Suitable for the cab of lifting equipment such as construction machinery (crane, crawler crane, truck crane, etc.) and port machinery (gantry crane, bridge crane, etc.). The main functions and characteristics of BJ-12 sound and light alarm• Multiple alarm tones are available for selection& bull; The volume is continuously adjustable& bull; Can speak and broadcast& bull; With alarm delay (optional)& bull; Sound and light synchronous alarm (optional)& bull; Multiple combination configuration methods make system applications flexible and convenient& bull; The appearance structure is novel and easy to operate and use. Main technical parameters Working voltage AC24V/AC36V/AC110V/AC220V/AC380V/DC24V (special voltage can be customized) Power frequency 50Hz~60Hz Tones A, B, E (special tone or voice can be customized) Power 100000~50W Speaker parameters 50W/16Ω Sound level 106dB~110dB, working temperature -20 ° C~+70 ° C, material control box: cold-rolled sheet, working humidity 10%~95% (non condensing), reference weight control box: 3kg, installation and usage method• The alarm should be fixed to the installation surface with M5 screws, and the installation surface should be flat and have sufficient mechanical strength& bull; According to the back panel terminal wiring diagram (see selection guide), correctly connect external devices (such as microphones, speakers, etc.), then connect the power cord and ground wire. After checking for accuracy, turn on the power switch and the power indicator light will light up& bull; Close the microphone switch to shout; Press the alarm switch on the front panel or close the alarm control switch on the back panel to achieve alarm operation. The volume can be adjusted according to the actual situation on site& bull; Turn the tone adjustment switch to select the alarm output tone. Notes• This product control box is only suitable for indoor installation& bull; Connect correctly and do not short-circuit the load& bull; Check if the power supply matches the rated voltage of the alarm& bull; The speaker power should be configured as standard& bull; It is normal for the temperature inside the control box to rise during use& bull; Do not open the computer case without authorization& bull; Please read the manual carefully before use& bull; If you have any questions, please contact the factory& nbsp;