What is the use of 4 channel relay module?

The 4 Channel Relay Module is a convenient board which can be used to control high voltage, high current load such as motor, solenoid valves, lamps and AC load. It is designed to interface with microcontroller such as Arduino, PIC and etc.

How do I connect a 4 channel relay board to my Arduino?

Start by finding the “5V” pin on the Arduino and running a jumper wire over to the “VCC” pin on the breakout board. The VCC is the positive (power) input for the circuit. Next, run a wire from the “GND” (ground) pin on the Arduino to the “GND” pin on the Breakout Board. The breakout board now has power!

How many relays can ESP8266 control?

This internet connected switch is simplified version of ESP8266 internet connected switch. Program code is simplified – it’s not plug and play, with hard coded configuration, but it uses 4 relays instead of just one. You can easy extend program to control more relays with single ESP8266.

How does a 4 relay module work?

The four-channel relay module contains four 5V relays and the associated switching and isolating components, which makes interfacing with a microcontroller or sensor easy with minimum components and connections. There are two terminal blocks with six terminals each, and each block is shared by two relays.

How many relays can Arduino control?

65,280 Relays
Use the IO Expander and Relay Expander with the Arduino to control up to 65,280 relays!

How do you check 4 channel relay is working or not?

How to test a relay

1. Keep the multimeter in the continuity check mode.
2. Check for continuity between the N/C contacts and pole.
3. Check for discontinuity between N/O contacts and the pole.
4. Now energise the relay using the rated voltage.
5. Now check for continuity between N/O contacts and pole.

How many amps do relays use?

Relay operating voltage is 24 v d c.,relay contacts can carry up to 10 amps. relay coil current would be one amp. Relay operating voltage is 24 v d c., but contacts carrying capability suppose 200 amp.,in this condition,contacts closing pressure must be such that 200 amps flowing the voltage drop must not exceed 5 m v.