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Duotone panel — violet briefing on the left, lime-sealed detail sheet on the right.
8 Channel 5V Relay Board 18650 SMD SMT Dual Battery Holder 3V 5V compatible Control 3V 5V compatible Control Interface PWM input (RPWM while the digital output (D0) provides a simple HIGH LOW trigger based on the adjustable threshold ideal for alarm based systems Optocoupler Isolation: Each input channel is optically isolated from the relay coil 100% authentic module sourced directly from trusted
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