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 those switches. Specifically, you can use 5V DC to control max.250V AC or 110V DC. We use an on-board STM32F030F4P6 to control the channels separately. The control command is transmit via the I2C interface, the on-board STM32F030F4P6 will parse the command, so that you can control the switch you want.

High temperature resistant plastic shell
High voltage load
Low power consumption
Long lasting
128 Optional I2C address
Applications
Domestic appliance
office machine
Remote control TV receiver
monitor display
audio equipment high rushing current use application