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ViewBus Enabled, 3channel Relay module 0.5Amp per channel for LC (Low Current only) Automation Security Siren, Electric Lock, Curtain motor, trigger of gate/Garage Motor, Lighting simple low load 0.5A/channel control, ... etc. - Small size can fit behind switch. With Broadcast Enabled, Ready with Firmware USB Upgrade (Warning: Higher Loads Require Adding of Contactors for Protection per channel Load)
3R mini Relay Moudule 0.5A (G4)
Category: Multifunction Relay controller
Model: SB-3R-UN
Total Price: $83.00
Stock Status: In Stock
The 3R Mini Relay Module 0.5A (G4) is a compact 3-channel relay board designed for low-current signal control in industrial, automation, and IoT applications. With a 0.5 Amp per channel capacity, this module is ideal for switching low-power loads, logic-level circuits, and control signals from microcontrollers such as Arduino, ESP32, Raspberry Pi, and PLCs.
Built using Generation 4 (G4) hardware, it ensures high stability, long life, and fast switching performance in compact automation setups. Its small form factor and DIN-rail mounting support make it a perfect fit for both industrial panels and embedded control projects.
Key Features
- 3 independent relay outputs rated at 0.5A each
- High-performance G4 hardware for stability and efficiency
- Supports AC or DC switching (depending on relay coil configuration)
- Opto-isolated inputs for protection from control noise
- Compact PCB layout designed for tight control panels
- Screw terminal connections for easy wiring
- Compatible with Arduino, Raspberry Pi, ESP32, STM32, and PLCs
- LED indicators for relay ON/OFF status
- Low-power consumption and silent switching operation
Applications
- Smart home automation
- Industrial control panels
- PLC signal interface
- IoT projects and embedded systems
- Alarm and security systems
- Sensor-triggered switching
- Smart lighting control
- Motor or solenoid activation
- Prototyping and testing boards
- Educational and R&D labs
Technical Specifications
| Specification | Details |
|---|---|
| Channels | 3 (Independent) |
| Max Load | 0.5A per channel |
| Operating Voltage | 5V / 12V (model-dependent) |
| Input Signal | 3.3V / 5V logic compatible |
| Control Type | Digital |
| Isolation | Opto-isolated |
| Mounting Type | DIN-Rail or Panel |
| Indicators | Relay status LEDs |
| Size | Compact, space-saving design |
| Operating Temperature | -10°C to +70°C |
Why Choose the 3R Mini Relay Module (G4)?
- Built with industrial-grade components
- Designed for stable, low-current signal control
- Ensures long-term reliability and noise-free operation
- Easy to integrate into Arduino or PLC-based automation systems
- Backed by G4 engineering standards for superior performance