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0104110000020581
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3.3 V / 5 V Relay Module with Adjustable Delay (220 V)
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The screw terminals have 3 pins: "NC" (Normally Closed), "COM" (Common) and "NO" (Normally Open). When the relay is not connected, the "NC" and "COM" pins are connected and "NO" is isolated. When the relay is connected, the "NO" and "COM" pins are connected and the "NC" is isolated.
The module has four modes of operation:
To switch between these 4 operating modes, press the K1 button for 2 seconds. To exit the mode selection menu, you must press the K2 button.
To set the timer, you must use the K2 and K3 buttons:
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