4-20mA, RS485, RS422,RS232, V11, TTY, audio,fire alarm system surge protector:
The series product are applied to the signal control system, such as 4-20mA, RS485, RS422,RS232, V11, TTY,
xDSL, Audio,fire alarm system flexible to make it to be 2~4 wires or more wires protect...
Products: rs422 to rs232 converter,
rs232 to rs422 converter