| 摘要 |
A sound, touch, and light switching device disclosing a plurality of sensing components to generate electrical signal. An input amplifier connected to the sensing components adapted to amplify the electrical signal generated from said sensing components. An intermediate amplifier connected to the input amplifier receives the electrical signal and boost the signal to be fed into a driver amplifier. An output amplifier connected to the driver amplifier adapted to provide output voltage to energize the relay and drives an electrical load selected from the group alarm system, on and off lighting system, early warning device and the likes. |
