Shell: S standard Valpx357U electric components
P plate mounted shell
Power: B 24VDC，standard
C 48VDC，just for 234 type
U general AC supply（90-260V AC input） and 12V-30V DC supply，
Just for 234 type
Communication module choose
S 仅提供开关功能，只有AWR234提供5个继电器just offer on-off function, only AWR234 offer 5 relays
X 4~20mA analog current output module
M Modbus communication with 4~20mA output
H HART communication just suitable for two-wire instruments
I HART isolated four-wire, just suitable for 234 type
W just with Modbus communication function
DP Probus DP
Built-in Hawk Link modem：
X no Built-in Hawk Link modem：
G2 GSM frequency: 800/1900MHz/19200 baud rate, just suitable for Sultan234
G3 GSM频率：800/1800MHz/19200 baud rate, just suitable for Sultan234
X no requirements
A0 Lntrnsic Safu(AWR2 only):IECEx Zone 0(Exia IIAT4)/
ATEx(Grp II CatlGD IP67Eoxia II AT4)
A22 ATEX dust（Grp II Cat3DT85C IP67）
