Generic(Unbranded)4-Channel Relay Control Board Module With Optocoupler, 4 Way Relay Module for Arduino

Q: Will it works with raspberry pi GPIO connectors ?

I bought it to use with arduino...i do not own a raspberry pi. I think it will work with pi too. but you should ask some pi user.

Q: Is the relay normally open or close before 5v is given?

There are 3 terminals in each relay. 1) Common, 2) NO, 3) NC. You can use both NO/NC as per your requirement

Product ID: 64788398

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Details

Connector Type
Screw
Contact Material
Copper
Contact Type
Normally Open
Current Rating
250 Amps
Mounting Type
Screw Mount

⚡250A max contact current

🔧4 screw holes for secure mounting

🔵Compact 75x55x19.3mm blue PCB

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Description

⚡ Command your circuits like a pro — power, precision, and control in one sleek board!

ROBUST BUILD - Durable copper contacts with normally open design for reliable operation
SECURE INSTALLATION - Four screw holes ensure stable, vibration-resistant mounting
SMART CONTROL READY - Optocoupler isolation for safe, interference-free industrial and smart home automation
POWERHOUSE SWITCHING - Handles up to 250A contact current for heavy-duty control
PLUG PLAY COMPATIBILITY - Seamlessly integrates with all MCU systems including Arduino

This 4-channel relay control board module features optocoupler isolation and supports up to 250A contact current, making it ideal for Arduino and MCU-based projects. Its compact blue PCB with four screw holes ensures easy and secure installation, while copper contacts guarantee reliable switching. Perfect for industrial automation and smart home control, it offers robust, interference-free operation.

Specifications

Connector Type	Screw
Contact Material	Copper
Contact Type	Normally Open
Current Rating	250 Amps
Mounting Type	Screw Mount
Brand	THEMISTO
Operation Mode	Automatic
Contact Current Rating	10 Amps
UPC	632963206900 689786552783
Manufacturer	Bombay Electronics
Country of Origin	India
Model number	RB-1531216
Colour	Blue
Number of Memory Sticks	1
Item Weight	400 g
Product Dimensions	7.5 x 5.5 x 2 cm; 400 g
Item model number	RB-1531216
Item Height	20 Millimeters
Item Width	5.5 Centimeters
Included Components	1 x 4-Channel Relay Control Board Module With Optocoupler
Are batteries included?	No

Have a Question? See What Others Asked

is this relay work with esp8266?

Is this need extra 5v for vcc while i am using esp8266

Will it works with raspberry pi GPIO connectors ?

Is the relay normally open or close before 5v is given?

Reviews

S**K

Pritroniks Technologies, you Rocks🤘. Totally satisfied from price to quality

best relay board with resonable price available in Amazon. Thanks to the seller for sending it in hard paper box. The presentation is good. both boards are working just fine, tested it immediately with ESP-01 with Blynk app .. all relay trigger pins are working in 3.3 volt directly fom the ESP-8266-01. The electrical isolation from board to controller through optocupler is given. All the components are places perfectly, the space between high voltage to lowe voltage pins are good. Overall Its really a good product. I definitely buy it again.

16.09.2019

S**D

Good product, Fast delivery, But the seller has to improve packing.

Received the product in 2 days,Quality is good.But the packing is the problem, I received the product with bent pins. The seller has to improve the packing.

4.01.2022

P**A

Buy it Relay board

I have worked on many relay boards. People buying a logic LOW relay board should know this -This is a 5v, logic LOW relay board. This means that this relay will trigger or work when you apply logic LOW or 0 from any of your microcontrollers and power it up with 5v.Cost: Price is a little high you may get another relay board cheaper than this.Conclusion: Buy itMyEngineeringStuffs YT channel.

30.06.2021

A**E

Works randomly

Does not work all the time. Sometimes does not not work.

17.08.2024

M**E

PERFECT !

A Really good quality 4 channel relay module and works perfectly fine!!REALLY WORKS FINE WITH MY ARDUINO BOARD

20.11.2022

S**5

Good, Value for money...

13.06.2022

H**M

Value for money

Don't hesitate to buy by looking unbranded tag...It works fine and is cheaper than other branded product..Just look ur requirements for me 4 channel was sufficient

18.02.2020

A**K

Damaged product

Very bad quality product relay module is not working waste of money don't buy it you'll regret

16.04.2025

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