5pcs NE555 12V DC Adjustable 0-10 Second Timer Delay Relay Switch Module Shield

Module Properties : NE555 chip. It can also be used in making hobby projects. And is also Compatible with ARDUINO, RASPBERRY PI, AVR, PIC, 8051, etc. When no power applied the module, the state of the module is "NO" [ normal open ], CB and COM are conductive.

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