Relay Board 4ch
| SKU | PP-R4 |
|---|---|
| Product line | PIERRE Pro |
| Category | Relays |
| Manufacturer | JLCPCB |
| GTIN / EAN | 8606034720123 |
| HS code | 8536419000 |
Overview
The PIERRE Pro Relay Board 4ch is designed to provide reliable switching for smart home automation. It features four relay channels, each supporting a maximum load of 2.5A with a wide output voltage range of 20V to 240V AC, making it adaptable for various electrical loads.
This board operates on a 12V DC input and incorporates comprehensive safety features such as reverse polarity protection to prevent damage, over-voltage protection, and short circuit protection for enhanced reliability. Its compact and lightweight design enables easy integration into DIN rail systems, ideal for structured installations in automation projects.
Key features
4 relay channels, 12V DC input, 20V - 240V AC output, 2.5A max load per channel, over-voltage and short circuit protection, mounted on DIN rail
Technical specifications
| Electrical | |
|---|---|
| Number of Inputs | 4.0 |
| Input Voltage | 12V DC V |
| Output Voltage | 20V AC - 240V AC |
| Current | 0.01 A |
| Number of Outputs | 4 |
| Physical | |
| Mounting Type | DIN |
| Environmental | |
| Operating Temperature (°C) | 0°C - +50°C |
| Operating Temperature | +32°F - +122 °F |
| Operating Humidity | 10% - 95% RH (non-condensing) % RH |
| Altitude | <3000m |
| Safety | |
| Safety Features | Overload, Overload, Short Circuit, Reverse polarity |
Electrical & I/O
| Operating voltage | 230 V |
|---|---|
| Max. current | 10 A |
| Recommended circuit breaker | 10 A |
| DIN rail | 3 module(s) |
Pin layout
| Pin | Label | Type | Position |
|---|---|---|---|
| 1 | COM1 | relay_com | top |
| 2 | NO1 | relay_no | top |
| 3 | COM2 | relay_com | top |
| 4 | NO2 | relay_no | top |
| 5 | COM3 | relay_com | top |
| 6 | NO3 | relay_no | top |
| 7 | COM4 | relay_com | top |
| 8 | NO4 | relay_no | top |
| 9 | IN1 | coil_a1 | bottom |
| 10 | IN2 | coil_a1 | bottom |
| 11 | IN3 | coil_a1 | bottom |
| 12 | IN4 | coil_a1 | bottom |
| 13 | GND | power_gnd_in | bottom |
Physical & packaging
| Dimensions (L × W × H) | 52 × 58 × 86 mm |
|---|---|
| Weight | 81 g |
| Box dimensions (L × W × H) | 52 × 60 × 86 mm |
| Box weight | 81 g |
User manual
1. Product Description
- Input Terminals
- Input Ground (GND)
- Relay Outputs
- 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
- W: 52 mm
- H: 86 mm
- D: 58 mm
4. Wiring
- 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.