ASCOM d81 Messenger Quick Reference Manual page 16

Charging the EX Battery
When using in hazardous/classified areas, use an approved
battery pack only. The battery pack must be marked with art.
no.: 660274 on the label.
Charging parameters: Um = 5.25V, Im = 1.15A
For approved battery types, see certificate IECEx SIR 10.0038 or
Sira 10ATEX2072 and following supplements.
The documents above and the EC Declaration of Conformity can
be found at http://www.ascom.com/ws/ products_ws.htm and
http://www.iecex.com.
IMPORTANT: Battery charging or replacement is NOT permitted
in a hazardous area. When charging the EX classified handset, it
is only permitted to use a charger marked with DC3-AAAB/rev.
1A (or higher rev.), DC4-AAAB/rev. 3A (or higher rev.) or CR3-
AAAB/rev. 2A (or higher rev.) on the label. It is not permitted to
charge the EX battery pack alone.
Fastening/Removal of the EX Battery
Before using the handset the first time, lift the battery pack
upwards and remove the protection tape. Insert the battery
pack and fasten it using the provided screws that require the
provided special tool Battery pack opener.
To remove the battery pack, use the opener and untighten the
screws. Remove the battery pack by lifting it upwards. To fasten
the battery pack use the opener and tighten the screws.
IMPORTANT: Removing the battery pack is NOT permitted in a
hazardous area.
Headset in Hazardous Areas
In hazardous areas, it is only allowed to use the EX classified
headset adapter (art. no.: 660281) in combination with an EX
classified Peltor headset. The Peltor headset must be compatible
with the output parameters of the headset connector as follows:
U = 4.2 V
o
I = 169 mA
o
P = 583 mW
o
C = 2.2 µF
o
L = 2.2 µH
o
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