Micro USB 5V Digital LED Trigger Delay Cycle Timer Control Switch Relay Module T
2,74 €
P-4: signal holding function. P1.3: Signal trigger again, relay off, stop the clock;. Compared with electromagnetic relay products, longer life;. Module characteristics and uses The main interface: I n the relay does not work status display "000" (no decimal point), with a decimal point under relay state.
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