transducer
noun [ C ] electronics, physics specialized uk/trænzˈdʒuː.sər/ us/trɑːnsˈduː.sɚ/
传感器，换能器（将一种能量形式转换为另一种能量形式的电子设备，如麦克风，能将声波转换为电子信号）
any electronic device that changes one form of energy into another, such as a microphone, which changes sound waves into electrical signals