Allen bradley slc 500 1747-aic ser b dh-485 link coupler

Allen bradley slc 500 1747-aic ser b dh-485 link coupler 
allen bradley(a-b)
slc 500
dh-485
link coupler
cat: 1747-aic ser b
operating temperature code t3c
class i, groups a, b, c, and d, div.2
24vdc
external power requirements :
24 vdc +/-25% at 190 ma
n.e.c. class 2
fac 1p
aic-0995a1957
made in u.s.a.
weight : 320 gm