Relay Module Delay Control Board Adjustable For PC 12V Excellent
Feature: \n 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.\n2. Wide range of applications, in addition to for phones and PC, it can also be applied to various audio output scenarios such as automobiles and industries.\n3. Made of high\u2011quality materials, strong and durable, has a long service life.\n4. With small size, easy to carry and store, convenient to use and with good performance.\n5. With a protective case to reduce the damage caused by falling from a high place. \n\nSpecification: \n\nItem Type: Relay Module\n\nMaterial: ABS+PCB\nWorking Voltage: DC12V\nAdjustment Instructions: \nPress K1 for the first time, the nixie tube flashes -1, indicating that the sensitivity is adjusted, from 1 to 9; press K2 to increase and K3 to decrease to adjust (the factory default is 5)\nPress K1 for the second time, the nixie tube flashes 12.5, :
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