1, Voice-activated switch is an energy-saving electronic switch which uses sound effect to excite the pickup for acoustic-electrical conversion to control the electrical appliance to turn on, and can automatically turn off the power supply after a period of delay. The voice control switch consists of microphone BM, sound signal amplification, half-wave rectification, light control, electronic switch, delay and AC switch circuit. Turn off the voice switch during the day or when the lights are bright; At night or when the light is dim, the voice control switch is ready to work. When someone passes the switch, the sound of footsteps, voices and clapping can start the voice-activated switch (the light turns on), and after a certain delay, the voice-activated switch will automatically turn off (the light turns off).