3Ch PWM Square Wave Pulse Generator 1Hz-20kHz Duty Cycle Frequency Adjustable TTL232 RS485 Modbus RTU Board

3Ch PWM Square Wave Pulse Generator 1Hz-20kHz Duty Cycle Frequency Adjustable TTL232 RS485 Modbus RTU Board
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sku: 1005004467883588
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$3.00
Shipping from: China
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