Operation Manual
3
VX-920 SerieS Operating Manual
intrinsiC safety 
(
is
)
 information
IS versions of the 
VX-920
, equipped with any of the following optional units, meets the requirements of ANSI/UL 
913 5th Edition for Class I, Division 1, Groups C-D; Class II, Groups E-G; and Class III for hazardous locations.
  Battery Packs: 
FNB-V92LIIS
  Speaker Microphone: 
MH-50
D7A
, 
MH-66
A7A
, 
MH-66
B7A
  Encryption Unit: 
FVP-35
, 
FVP-36
  ANI Unit: 
VME-100
, 
VMDE-200
  Voice Storage Unit: 
DVS-5
  Multi Band Receiver Unit: 
SRX-3
, 
SRX-4
r
  Never charge the battery in the hazard areas.
r
  Never install/removal the battery in the hazard areas.
r
  Never install/remove the optional unit (includes the Speaker Microphone) in the hazard areas.
r
  The 
VX-920
 shall not be directly installed or used in any process where its enclosure might be electrostatically 
charged by the rapid ow of a non-conductive media.
r
  Ensure that there is no external damage to the radio, antenna or battery before entering the potentially explo-
sive atmospheres, as it might compromise the safety of the unit. eg an antenna with a damaged end or insula-
tion must be replaced before use in any potentially explosive atmospheres.
r
  Substitution of components may impair intrinsic safety. Installation of 
FNB-V92LIIS
 does NOT convert nor-
mal radio into IS version.
r
To acquire the IS version of the 
VX-920
, you much select the Intrinsically Safe battery option at the time of 
purchase.










