12V Re-lay Module DC 12V Four Channel Isolated Relay Control Module With Screw Terminal For Arduino 4 Channel DC12V With Optocoupler Protection Electrical Circuitry & Parts

Descriptions: DC 12V 4 Channel 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?

Arelayis 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 12V’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 12V .

Overview:

• Channel: 4 channel
• Relay Operating Voltage: 12V
• Triode drive, increasing relay coil
• High impedance controller pin
• Pull-down circuit for the avoidance of malfunction
• Power supply indicator and Control indicatorlamp
• Power supply and relay instructions, lit, the disconnect is off;
• The input signal, signal, common Terminal and start conducting;

Specifications:

• 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. 12V
• 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

Application:

• 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;

Package include:

• 1 x 12v 4 Channel Relay Module