BC-2 Louderspeaker & Controller Kit Manual Shanghai Nanhua Electronics Co., Ltd controller YH25‐3/YH50‐3 YH10‐2 SE SS Mounting dimension diagram （unit： mm） controller SE Goose-neck microphone SS Speaker microphone Applications Used in the cabs of engineering machinery（travelling cranes、crawler cranes、truck cranes etc.） 、 harbor crane（gantry crane、bridge crane etc.）. Major functions and features: • Various tones for selection Volume adjustable Microphone & Loudspeaker available With alarm time delay funcion (optional) Give warning light and alarm at the same time (optional) Several kinds of combination mode for choose Specifications: Voltage Alarm tone Speaker Working temperature Working humidity A、B、E（customized available） Frequency Power Cold-rolled plate Mounting & operation: • Mount the device onto mounting surface with M5 screws, the mounting surface should have enough stength to hold the device. • Wiring the device base on “wiring schematic”, connect external devices like microphone and loudspeaker. Connect power cable, ground cable; turn the power on after double check. • Speak into the microphone by pressing the switch; Send alarm signal by pressing switch on the front panel or at the back panel; volume could be adjusted depends on the background noises. • Select alarm tone by switch the “tone switch”. Notice: • Controller is for indoor use only. • Connect cables in the right way, do not shortcut. • Speaker power should with standard configuration. • Temperature increasing when using will happen. • Do not open controller box. Any questions please contact us. • Do not empty load the speaker output terminal on controller to prevent burn out. 1755Wenbei Rd, Jiading district Shanghai 201

BC-2 Louderspeaker & Controller Kit Manual Mode selection Mode Configuration controller BC‐2Y + SS microphone + YH10‐2 BC‐2II Wiring schematic Waterproof Connector Shanghai Nanhua Electronics Co., Ltd