4 CHANNEL 5V RELAY SHIELD FOR ARDUINO Relay is a low-current signal control power equipment that is commonly employed in electronic devices, which enables powerful single-chip control devices that are extensively employed within the SCM system to build intelligent home projects. Arduino relay shield can be directly connected to the appropriate use of different motherboard types without problems with patch cables.
The features of the module are as follows:
1. For Shield interfaces and shape. For Shield interfaces and shape
2. Continue stacking other Expanding boards.
3. 3 M3 screw holes to position screws to make installation simple
4. High drive (5V (or 3.3V) normally has a contact closure
5. 4 CHANNEL 5V RELAY SHIELD module indicator on the board (red)
Important Note: When you are using this For Arduino UNO board connected to it, since the UNO USB’s interface can be very high, it is recommended to avoid the green terminals that are shorted to its shell.
Arduino relay shield :
Relay Shield Interface (the final picture shows)
Relay: sky 5V DC relay, model HJR-4102L-5V Relay1 on in behalf of the first relay as well as the second relay and further.
Power Interface: 5V DC power interface
Indicator: Four lights will turn red at the moment that the relay has been turned high. The indicator will illuminate.
Relay Terminals: Terminals with high-current, high-current high-voltage is possible to connect the devices. The first foot ( i.e. NOx) is normally an open pin. NCX pin is usually closed, COMx is common, i.e., when the relay is not being driven NOx and COMx are open between two pins, NCX and COMx connections when you have a relay (x) control signal pin is high drive relays, NOx and COMx connections are open to NCX as well as COMx.