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Green PCB development board with four black relay blocks, pin headers, and two push buttons

Rocketek

Rocketek 4-Way 5V Relay Module DC5-60V Programmable

SKU CH-YX7X-NQS9F

A development board with four 5 V relays, programmable buttons, and DC 5–60 V supply for smart home control

  • 4M Byte Flash enables complex firmware
  • IO and UART ports exposed for easy secondary development
  • Onboard programmable and reset buttons simplify testing
  • Four 5V relays switch loads up to AC250V and DC30V
  • Wide DC5-60V supply range fits many power sources

Development Board with 4M Byte Flash

This ESP32 development board carries 4M Byte of flash memory and exposes both IO and UART programming ports for custom firmware work. It targets hobbyists and engineers building smart-home or automation prototypes who need a ready-made relay interface.

4-Way 5V Relay Outputs

Four onboard 5V relays switch loads up to AC250V or DC30V, allowing direct control of mains-level devices from low-voltage logic. The module accepts a wide DC5-60V supply input, so it can run from common bench or automotive sources without extra regulation.

Not for High-Current DC Switching

The relay contacts are rated for DC30V maximum, so builders who need to switch higher DC voltages or heavy inductive loads must choose a different module. Users requiring more than four switched circuits will also need additional hardware.

Highlights

  • 4M Byte Flash enables complex firmware
  • IO and UART ports exposed for easy secondary development
  • Onboard programmable and reset buttons simplify testing
  • Four 5V relays switch loads up to AC250V and DC30V
  • Wide DC5-60V supply range fits many power sources

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the four 5 V relay channels to a load rated up to AC 250 V without exceeding the switch rating?

Wire each relay's common, normally-open and normally-closed terminals to the load circuit; the contacts are rated for switching voltages within AC 250 V and DC 30 V, so keep the load voltage at or below those limits.

What maintenance will the on-board ESP32 development board with 4M Byte Flash need over time?

The board has no moving parts; occasional firmware updates via the UART download port and visual inspection of solder joints and relay contacts are the only upkeep required.

Which limit appears first when all four relays switch continuously under a DC 30 V load?

The relay contact rating of DC 30 V is the first boundary reached; sustained switching at or near that voltage will degrade contact life before the DC 5–60 V supply range or the ESP32 module becomes a constraint.

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