2N Analogue GSM gateway 2N EasyGate PRO - Manual, 1749 v1.03 - Manual (Page 20)

Mounting 2.3
20
Warning
n Do not activate the power supply until the antenna is connected to
EasyGate to avoid the wireless module damage.
n For backup use only suggested type of accumulators NiMh size AA. Only
this type of storage batteries is permitted for use!.When another type of
batteries is used, there is a danger of damage of device or even
explosion!
n The battery should never be placed in municipal waste. Please
check local regulations for disposal of batteries.