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Key Features:

• Bluetooth 4.0 relay module – control 4 channels wirelessly

• Operates at DC 5V, suitable for microcontrollers and USB power

• Control relays from Android phone via Bluetooth app

• Each channel can handle 10A at 250VAC / 30VDC

• Supports manual and wireless triggering

• Use for IoT, home automation, mobile-controlled devices

Product Description (Detailed):

The DC 5V Bluetooth 4-Channel Relay Module allows you to remotely switch AC or DC loads via Bluetooth using your smartphone. Each of the four relays can be independently toggled via a mobile app, enabling control of lights, fans, appliances, motors, or other electronics without physical switches.

It’s ideal for smart home automation, wireless control projects, and DIY IoT applications. The onboard Bluetooth module communicates directly with Android devices (via apps like “Bluetooth Electronics” or custom serial apps), without requiring internet or Wi-Fi.

Technical Specifications:

How to Use:

1. Power the module via 5V DC supply or USB.

2. Connect your Android phone via Bluetooth app (e.g., Bluetooth Terminal).

3. Send serial commands (like A, B, C, D) to toggle each relay.

4. Observe relay and LED switching as per command.

5. Connect AC or DC loads to the NO/NC/COM relay terminals.

No internet or router required – local Bluetooth connection only.
For AC loads, ensure proper insulation and safety precautions.

Applications:

• Smart home control (lights, fans, appliances)

• Garage doors, irrigation systems, and curtain motors

• IoT-based DIY automation systems

• Bluetooth remote-controlled gadgets

• Arduino & ESP32 automation projects

Package Includes:

• 1 × 5V Bluetooth 4-Channel Relay Module

• 1 × Bluetooth receiver (integrated or pre-soldered)