Measurement technology mtl4041b proximity switch isolation barrier?

Measurement technology mtl4041b proximity switch isolation barrier 
measurement technology ltd.
mtl4041b
repeater power supply, 4/20ma,
for 2 or 3-wire transmitters
[eexia]iic
(en50 020)
baseefa no. ex92c2003
um= 250v
max. amb. 60°c
intrinsically safe field connections 28v
max. 300 ohms min (term. 2/3- 4/5)and 1.2v
max. 20 ohms min.(term. 6-4/5)for class i
groups a,b,c,d: class ii groups e,f,g:
class iii
supply: 28-35v dc 85ma max.
aus ex 1438x ex (ia)i/iic ip20
mda ex ia 10084
mda ex ia 10118
20-35vdc
14b2953x312
cl6351x1-a3
made in luton, england
weight: 95 gm