The Grove - 4-Channel SPDT Relay has four single pole - double throw (SPDT) switches. It only requires low-voltage and low current signals to control the switches, specifically, you can use 5V DC to control max 250V AC or 110V DC.

They have used an on-board STM32F030F4P6 to control the channels separately. The control commands are transmitted via the I2C interface, the on-board STM32F030F4P6 will parse the command, so that you can control the switch you want.

Some applications of this relay are:

• Domestic appliances
• Office machines
• Remote control TV receiver
• Monitor displays
• Audio equipment
• High rushing current use applications

• Dimensions: 120mm x 60mm x 19mm
• High temperature resistant plastic shell
• High voltage loads
• Low power consumption
• Long lasting
• 128 Optional I2C address

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