4 Channel 5V Relay Shield Module Four Way Relay Control Board Expansion Board
Description
Instruction Relay Shield ie 5V Quad Relay Module is a small current signal control power equipment commonly used electronic module enabling high power single chip control devices are widely used in SCM system to make smart home project and can be directly plugged into the compatible the use of various types of motherboards eliminating the patch cable troubles Features 1 Standard For Shield interfaces and shape2 Can continue to stack other Forexpansion boards3 3 M3 screw positioning holes for easy installation4 High Drive 5V or 3 3V normally open contact closure5 Onboard relay indicator red Special Note When using the For UNOboard connected to it because USB interface is extremely high should avoid green terminals are shorted its shell 6 Power Interface 5V DC power interfaceIndicator four lights are red when the relay is driven high the corresponding indicator will light up Relay Terminals Terminal high power high current high voltage can be connected to the device The 1st foot i e NOx is a normally open pin NCx pin is normally closed COMx is common i e when the relay is not driven NOx and COMx open between two pins NCx and COMx connection When the relay x control signal pin is high drive relays NOx and COMx connection open between NCx and COMx Package includes 1 x Expansion Board
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