DC 5V 2-Channel Relay Module with Bluetooth 4.0 BLE for Android/iOS Phone

Description

What is it The 5V 2-Channel Relay Module with Bluetooth 4.0 BLE allows you to control electrical devices from a distance using an Android or iOS phone. Features Vcc: 5V Number of relay channels: 2 Type of connectivity: Bluetooth 4.0 BLE What is it used for This module is ideal for home automation projects, prototypes, and small applications requiring remote control of electrical devices such as lights or appliances. You can use it with Arduino or ESP to create custom control systems. How to use it This 5V 2-Channel Relay Bluetooth 4.0 BLE module is perfect for makers who want to control electrical devices from a distance using an Android or iOS phone. It’s ideal for home automation projects, prototypes, and small applications. Required components Arduino Uno Android/iOS phone with Bluetooth USB A-B cable 5V power supply Connect the relay module to the 5V power supply and the microcontroller Arduino. Download the relay control app from the Google Play or App Store. Establish a Bluetooth connection between the phone and the module. Program the Arduino with a sketch that communicates with the relay module. Check the electrical connections to avoid short circuits. Use the app to control the relay channel status (ON/OFF). Test the remote control functionality with the phone. We recommend using current protectors and fuses. Example code // Insert Arduino sketch code here to control the relays // Example: void setup() { Serial.begin(9600); } void loop() {} Mini-project Create a remote control system for lights or electrical appliances in your home. Use the relay module app to turn devices on/off. Common errors Unstable Bluetooth connection Incorrect Arduino and module connections Insufficient power supply App configuration error Recommended accessories Arduino Uno R3 USB A-B cable Circuit breaker compatible with Arduino Motion or light sensors compatible with Arduino Frequently asked questions How can I control the relay without a phone? You can use an Arduino board as an intermediary and write a sketch that manages relay commands. What is the maximum control distance? Check the datasheet for precise Bluetooth range information.