Descriptions: 5V 4 Channel Blue Relay Module
4 Channel Relay Module board is used to interface any Microcontroller with Electrical Appliances/Loads. Can also be used in driving high power motors.4-channel relay output modules, relay output contacts 250A 10A. Input IN1, IN2, IN3, IN4, the signal line LOW effective. VCC, GND power input, can relay a separate power supply relay power input of JD-VCC.
What is a Relay?
A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a separate low-power signal, or where several circuits must be controlled by one signal.
Relays work on electromagnetism, When the Relay coil is energized it acts like a magnet and changes the position of a switch. The circuit which powers the coil is completely isolated from the part which switches ON/OFF, This provides electrical isolation. This is the reason we can control a relay using 5V’s from an arduino and the other end of it could be running an 220 to 240V appliance, the 240V end is completely isolated from the 5V arduino circuitry.
- Channel: 4 channel
- Relay Operating Voltage: 5V
- Triode drive, increasing relay coil
- High impedance controller pin
- Pull-down circuit for the avoidance of malfunction
- Power supply indicator and Control indicator lamp
- Power supply and relay instructions, lit, the disconnect is off;
- The input signal, signal, common Terminal and start conducting;
- Module can be controlled directly by Microcontroller (Raspberry Pi, Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)
- Easy to install and fix
- Optically Isolated relays to protect your microcontroller from damage if the equipment being controlled fails
- four screw holes, hole diameter 3.1mm
- relay status indicator light, release status LED is off
- Relay Maximum output: DC 30V/10A, AC 250V/10A
- Size: 75mm (l) x 55mm (b) x 19.3mm (h)
- Weight: 58g
- PCB Color: Blue
How to connect:
The connections to your Arduino (or microcontroller) side:
- VCC – supply voltage. 5V from my Arduino.
- IN1 – set to HIGH to set the relay to its “default” state, set to LOW to switch the relay to its alternate state
- IN2 – same as IN1, but controls the second relay on the board
- IN3 – same as IN1, but controls the second relay on the board
- IN4 – same as IN1, but controls the second relay on the board
- GND – ground
- Smart home control
- Industrial sector
- Fan/lighting control
- 5-12 VDC automotive applicatio
- support all MCU control.
- the industrial sector;
- PLC control;
- smart home control;
- 1 x 5v 4 Channel Relay Module