Relay Board 4ch
User Manual

Relay Board 4ch

SKU: PP-R4

Table of Contents

1. Product Description

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  1. Input Terminals
  2. Input Ground (GND)
  3. Relay Outputs
  4. Housing

2. What you need

Wired. Needs a PIERRE PRO or LITE Controller with a free output, plus the Relay Board 4ch.

3. Product Size

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  • W: 52 mm
  • H: 86 mm
  • D: 58 mm

4. Wiring

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  • Connect +12V to the relay module and the main controller.
  • Connect GND to the relay module and the main controller (common ground).
  • Connect Live (L) to the COM terminal of each relay output.
  • Connect the NO (Normally Open) terminal to the load (e.g. light, motor).
  • When the relay is activated, power flows from COM to NO to energize the load.
Run Wires Cross-section Cable type Conductors
From PIERRE Controller to Relay Board 4ch 6 0.75 mm² H07V-K +12V, GND, OUTPUT 1–4

5. Video

PIERRE Academy - Relay Board Setup and Light Installation. https://www.youtube.com/watch?v=n9zJBuLs_iM

PIERRE Academy - Controller Setup. https://www.youtube.com/watch?v=oScvanSTIzg

6. FAQ

Q1: What happens if one relay on the relay board fails?

Move the load to a free relay channel and reassign the controller output in the PIERRE Partner app, or replace the board.

© 2024 Pierre. All rights reserved.

Last updated: October 06, 2026