Siemens siplus s7-300 6ag1 321-1bl00-2aa0 digital input module 
siemens
sm321
di 32xdc24v
6ag1 321-1bl00-2aa0
720 2065 -01
siplus s7-300
1p 6ag1 321-1bl00-2aa0 (base on 6es7 321-1bl00-0aa0)
s lbwn446089
cl.1 , div. 2, gp.a,b,c,d t4
cl.1 , zone 2, gp. iic, t4
e stand: 5
17sp
ta : -25ºc....+60ºc
made in germany
weight: 380gm