Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
Onboard photocoupler isolation, prevent interference from external high-voltage circuit connected to the relay
High quality relay,
contact rating: 10A 250V AC or 10A 30V DC
ABS protection enclosure with rail-mount support, easy to install, safe to use
Breakout USB port and BOOT pin, make it easy to debug without disassembling the enclosure