What is the difference between the RM21 and RM3?
The position of the output contact (socket), the RM21 is 2 storeys and the RM3 is 3 storeys.
Relay module for electrical isolation between logic and load.
What is the difference between the RM21 and RM3?
The position of the output contact (socket), the RM21 is 2 storeys and the RM3 is 3 storeys.