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2PCS DC 12V 10A Adjustable Time Delay Relay Module LED Digital Timer Switch HOT

2PCS DC 12V 10A Adjustable Time Delay Relay M...

Product Description: The multi-function relay control module is specially desi... Product Description: The multi-function relay control module is specially designed for users with many different needs. It adopts a microcontroller as the main control unit and presets 32 kinds of functions and users can use corresponding specific... more

as low as $14.89

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5x NE555 Duty Cycle Pulse Frequency Adjustable Square Wave Generator Module HOT

5x NE555 Duty Cycle Pulse Frequency Adjustabl...

Specification: On-board chip NE555. A single channel output square wave pulse ... Specification: On-board chip NE555. A single channel output square wave pulse generator module based on the ubiquitous NE555 timer IC. The module can be powered from a wide power supply range (4.5 to 12V) and will produce a continuous square wave... more

as low as $10.89

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