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Green circuit board with three black relay blocks and a 40-pin GPIO header

LORDWORLD

LORDWORLD 3-Channel Relay Board for Raspberry Pi 40-pin GPIO development board

SKU CH-DXWK-HHTFQ

A 3-channel relay board connects to a Raspberry Pi 40-pin GPIO header and switches loads up to 5 A at 250 V AC or 30 V DC with opto-isolation and status LEDs

  • Control three independent circuits with 5 A 250 V AC or 30 V DC switching capacity
  • Photo-coupler isolation separates control logic from relay coils for stable development testing
  • Onboard status LEDs show each channel state for faster GPIO debugging
  • Jumper-selectable pins let you use default or custom GPIO assignments
  • Example code supports wiringPi, WebioPi, shell, Python and bcm2835 libraries

Relay Board for Raspberry Pi GPIO

This three-channel relay board connects to the standard 40-pin GPIO header on Raspberry Pi boards. It is designed for automation testing, GPIO control exercises and embedded development projects. Makers and students can use it to switch external devices from a Pi platform.

5A 250V AC Switching Limits

Each channel handles loads up to 5A at 250V AC or 5A at 30V DC. Photo-coupler isolation separates the control side from the relay side to reduce interference during switching tests. The 40-pin header defines the mechanical and electrical interface for all supported Pi models.

Three-Channel Capacity and Headroom

Three independent relays with status LEDs let you monitor and control up to three separate circuits simultaneously. Jumpers allow selection of default or custom GPIO pins for each channel. Example code covers wiringPi, WebioPi, shell, Python and bcm2835 libraries. Builders needing more than three switched circuits will require additional modules.

Punti di forza

  • Control three independent circuits with 5 A 250 V AC or 30 V DC switching capacity
  • Photo-coupler isolation separates control logic from relay coils for stable development testing
  • Onboard status LEDs show each channel state for faster GPIO debugging
  • Jumper-selectable pins let you use default or custom GPIO assignments
  • Example code supports wiringPi, WebioPi, shell, Python and bcm2835 libraries

Caratteristiche tecniche

BrandLORDWORLD

Domande su questo articolo

How many relay channels does this board provide and what load can each handle?

The board has three channels, each rated for 5 A at 250 V AC or 5 A at 30 V DC.

What does the 40-pin GPIO header mean when the board is mounted on a Raspberry Pi?

It connects directly to the Pi's 40-pin header, giving the Pi control over all three relay outputs for automation or prototyping.

Which GPIO pins drive the relays and can they be changed?

Jumpers let you select the default GPIO pins or wire custom control pins, with example code for wiringPi, WebIOPi, shell, Python and bcm2835.

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