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3 Channel RS485 TTL232 1Hz-20kHz PWM Square Wave Pulse Generator Duty Cycle Frequency Adjustable Module DC 5V 12V

USD 2.73USD 4.20

3 Channel RS485 TTL232 1Hz-20kHz PWM Square Wave Pulse Generator Duty Cycle Frequency Adjustable Module DC 5V 12V

Description
Specification
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