Mitsubishi A1SJ71AT21B — A versatile and effective communication interface module, the Mitsubishi A1SJ71AT21B, was created to meet a variety of data connection needs

Part number	A1SJ71AT21B
Brand	Mitsubishi
Category	Communication Module
Description	A versatile and effective communication interface module, the Mitsubishi A1SJ71AT21B, was created to meet a variety of data connection needs
Manufacturer	Mitsubishi
Product Line	A Series
Part Number	A1SJ71AT21B
Weight	0.63 lbs (0.28 kg)
Type	Interface module
Cable type	Twisted pair cable
Input channel number	4
Output channel number	2
Occupy I/O points	64
Offset and gain	Configurable
Input and output signals	voltage or current
Cycle scan mode	Included
Application	For master or local station of MELSECNET/B data link system
Number of inputs/outputs	32
Current consumption	0.66
UL	Approved
cUL	Approved

A versatile and effective communication interface module, the Mitsubishi A1SJ71AT21B, was created to meet a variety of data connection needs. By increasing the possibilities for offset and gain control, this Mitsubishi module offers a versatile approach for fine-tuning the output and input signals. It works with a variety of sensors and actuators since it can both input and output voltage and...

Compatibility data for this part number is being verified. Send an RFQ with your equipment model and serial — our suppliers confirm fitment before quoting.

Data compiled from 1 verified source. Last reviewed 2026-08-16.