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We are a Chinese PLC/HMI/VFD manufacturer with 20 years of experience.

UN 331-1KF02-0AB0


SM 331 8 Analog expansion module 300 PLC equivalent of Siemens 300 PLC

1). SM331 8AI ; 
2). Compatible with Siemens 6ES7331-1KF02-0AB0 ; 
3). Analog expansion input module ;
4). Could connect with Siemens 300 CPU ;
5). 3 year warranty ;

Model SM331
8AI
Product  Description 8AI;
voltage/current/RTD temperature measurement modules; Resolution: 13bits
Optical isolation; high immunity; stable
Power consumption
@ Rate value /
@ From backplane bus current consumption 90mA
@ From L+ /
@ Power loss 0.4W
The power of transmitter
@ Supply current /
@ short-circuit protection /
Number of analoginputs 8
Cable Length(Shielded) Max: 200m
Input type and input range
@ voltage 1~5V, 0~10V, ± 50mV
± 500mV, ± 1V, ± 5V, ± 10V
@ current(4wire) ± 20mA, 0~20mA, 4~20mA
@ current(2wire) /
@ tesistance 600Ω , 6KΩ
@ thermocouple /
@ RTD Pt100(-200C-850C)
A/D resolution 13bits
Basic conversion time(per channel) 66/55ms
Interference frequency suppression 50/60Hz
Tolerance(Over entire temperature range)
@ Voltage ± 0.6%
@ Current ± 0.6%
@ resistance ± 0.6%
@ temperature ± 1C
Interrupts
Diagnostic interrupt None
Limit-value interrupt None
Isolation tested for contact
@ Between channels None
@ Between channels and backplane bu Yes
Front connector 40-pin
Dimensions(W x H x D)(mm) 40× 125× 120
Order Number UN 331-1KF01-0AB0

20 years experience

3-year warranty

Support free sample test


  1. Shenzhen Unimat Automation Technology Co., Ltd., established in 2005, is a National High-Tech Enterprise, a Specialized and Innovative Enterprise, and a participant in the development of the national standard for Programmable Controllers, specializing in industrial automation control.
  2. The company's products include PLCs, HMIs, VFDs, and Industrial Internet of Things systems, all of which have complete independent intellectual property rights.

As of December 2023, UniMAT PLC sales have exceeded 2,000,000 units.