Description Trigger mode High level5V relay moduleCan be used for microcontroller development board module or home appliance control5V 12V TTL control signalCan control DC or AC signal also 220V AC loadNormally open closed contactPower indicatorControlled lights bright when pull and not shine when disconnectIncrease the transistor drive relay coils control pins high impedanceControl pins have pull down circuit to prevent malfunction of relay vacantPackage included 1 x 5V 1 channel relay module
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