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Four green circuit boards each with eight black relay cubes and pin headers

Avantalk

Avantalk 8-Channel 5V Relay Module 4-Pack

SKU CH-RB1V-7Q0ZA

Four boards each switch eight circuits up to 250 V AC or 30 V DC at 10 A from a 5 V microcontroller

  • Controls up to 250 V AC or 30 V DC loads at 10 A each
  • Optically isolated 8 channels protect microcontrollers from high-voltage spikes
  • Low 15-20 mA drive current works with 3 V-5 V logic devices
  • Four boards in one pack for multi-zone smart-home or PLC projects
  • Power and per-channel status LEDs show relay state at a glance

4-Pack 8-Channel Relay Modules

This pack contains four identical 5 V relay boards, each providing eight independently switched channels. They are intended for hobbyists, students and engineers building microcontroller-driven automation such as smart-home lighting, appliance switching or PLC-style control panels.

Compatibility checklist

Verify that your controller can supply 15–20 mA per channel at 3–5 V logic levels and that the 5 V rail can deliver the total coil current for all active relays. Confirm the load you plan to switch stays within the 250 V AC 10 A or 30 V DC 10 A contact ratings and that your enclosure provides adequate creepage distance for mains voltages.

Upgrade path

The modules replace discrete electromechanical relays or smaller-channel-count boards by integrating optocoupler isolation, drive transistors, freewheeling diodes and status LEDs on a single PCB. The jump is worthwhile when you need eight optically isolated channels per board with both normally-open and normally-closed contacts selectable by jumper.

How it compares

Measured against everything we stock in Relays & Push-Button Switches, at today’s prices. Recalculated every night.

Price $40.99
Pricier than about 75% of the 15 comparable items (median $16.99).

Specifications

No published specifications for this item yet.

Questions about this item

What comes in the box and do I need to buy anything else to use it?

The pack includes four 8-channel 5V relay modules. You will need a 5V power supply and a microcontroller such as an 8051, AVR, PIC, DSP, ARM or MSP430 to drive the control pins.

How do I choose between the normally open and normally closed contacts on each channel?

Each relay provides both a normally open and a normally closed contact; a jumper on the board selects which one is active for that channel.

What does the 10A rating mean when I connect a real load?

Each channel can switch up to 10A at AC 250V or DC 30V, so mains appliances up to 220V and low-voltage loads up to 30V are supported within that current limit.

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