1 When audio signal input is detected, the relay is closed. After the audio signal disappears, the relay delay (adjustable from 0.1 to 9.99 seconds) is disconnected, which is easy to operate. 2 Wide range of applications, in addition to for Android phones and PC, it can also be applied to various audio output scenarios such as automobiles and industries. 3 Made of high-quality materials, strong and durable, has a long service life. 4 With small size, easy to carry and store, convenient to use and with good performance. 5 With a protective case to reduce the damage caused by falling from a high place.
What's in the box
1 x Relay Module
