4 Channel I2C Relay Electromagnetic 3.3V 5.0V Compatible with Arduino Raspberry PI MCU DIN Rail Compatible Home Automation & DIY Projects. with Built in LED Indicators

- PCB board dimension 72mm x 100mm - Compatible with DIN rail plastic holder - Operation DC voltage – 3.3V and 5.0V - Maximum current @5.0V – 350mA - Maximum current per relay – 10A peak - LEDs indicators for each electromagnetic relay channel - Relays with SPDT switch contacts: Normally Open, Common, Normally Closed - Relay contact resistance 100 milliohms max. ( initial value ) - Relay insulation resistance 100 MOhm min. (DC 500V) - Relay operation time 8 ms max - Relay release time 5ms max - Relay dielectric strength 750 VAC, 50/60Hz between contact - Relay dielectric strength 1,500 VAC, 50/60Hz between all elements - Relay expected life Mechanical - 10,000,000 operations min. - Relay expected life Electrical - 100,000 operations min. at rated load - Working temperature range - 25 C ~ + 80 C - Comes with different slave address 0x27 or 0x3F, depends on the batch - Each board can be assigned an I2C address between 0x20...0x27 (0x38...0x3F) by the DIP switch - The module contains an PCF8574 or PCF8574A chip - The logic power supply voltage should match the voltage levels on the I2C bus. The SDA and SCL lines are pulled up to VDD with 5.6k resistors on the relay module - Up to 8 boards can be connected to each I2C bus - Compatible with Home Assistant / ESP Home

• Versatile I2C Relay Control: Control up to 4 boards relays with ease using I2C communication, making it perfect for a wide range of home automation and DIY applications. Each board can have 8 different I2C address.
• LED Indicators for Each Channel: Stay informed with clear LED indicators for each relay channel, providing real-time status updates at a glance
• DIN Rail Compatible: Designed with compatibility in mind, our relay board fits seamlessly into DIN rail plastic holders, ensuring a secure and professional installation.
• Reliable and Efficient: With a maximum current of 10A per relay and low relay contact resistance, this board is built to handle your demanding electrical tasks while maintaining energy efficiency.
• Customizable I2C Addresses: Tailor the I2C address to your needs by utilizing the onboard DIP switch, allowing for easy integration with other I2C devices and systems. Ideal for use with Home Assistant and ESP Home setups.