1.  Eyepiece dioptre adjustment ring
3.  Menu button 
2.  Down button 
4.  Up/Zoom button   
    Device is powered on
5.  On/Calibration ON button 
7.  Lens cap
that glass wearers fold back the edge of the 
6.  Lens focus ring
9.  Battery release button
   
8.  MicroUSB connector
LED indicator displaying current status of the device
    Device on / battery charge <10%
For a better viewing experience, we recommend 
LED Indicator  Operating Mode
elastic eyeshade.
USING THE RECHARGEABLE BATTERY
џ Attach the second plug of the microUSB cable to the 
socket (12) of the mains charger (11).
џ Attach the USB plug on the USB cable (15) to the USB 
connector  on  the  mains  device  (16).  Plug  the 
deviceinto a 100–240 V power outlet (17).
џ Two batteries can be charged at the same time – a 
second slot is provided for this. 
џ The LED indicator (13) will light up battery charge 
status (see table).
Note: The PB8I Power Bank may be used as a charger 
(see Item 7).
Option 2  (Fig.3) :
џ Insert the rechargeable battery (10) supplied with 
your device, or purchased separately, fully along the 
guide  rail  into  the  APS  charger  slot  (аvailable 
separately) (11). 
џ Point A on the battery and Point B on the charger 
should be aligned.
џ Install the battery (10) into its slot on the instrument 
case (14) by aligning the icons to form a 'dot' on the 
device and the battery.   (see Fig. 4).
Charging the battery
AXION  KEY  thermal  imagers  are  supplied  with  a 
rechargeable  APS3  Lithium-ion  Battery  Pack.  The 
battery should be charged before first use.    
џ Connect the other end of the USB cable (15) to the 
mains charger (16) or to a USB socket connected to 
another power source with rated output of 5V or less. 
џ Connect the mains charger (16) to the mains power 
supply.
Option 1  (Fig.2) :
џ Attach a USB cable (15) to the microUSB connector 
(8) on the device.
COMPONENTS AND CONTROLS
BUTTON OPERATION 
123456
7 9 8
LED indicator
Fig. 
1
2
Control 
mechanism
Condition / Operating 
Mode
1 short press Next short press Long press
ON button   Device is powered off Power on the device Device calibration Power on the device
Display off Turn on display Device calibration Power off the device
Device turned on, quick 
menu, main menu
Device calibration Display off / device 
powered off
Up/Zoom  
button
Device is powered on
Change magnification (Zoom)
PiP on/off
Quick menu Increase parameter Increase parameter
Main menu Navigation up, right Navigation up, right
Menu button  Device is powered on Open quick menu Open main menu
Quick menu Navigation up Exit quick menu
Main menu Confirm value, enter menu options Exit menu options, exit 
main menu
Down button Device is powered on Operating modes  Color palettes
Quick menu Reduce parameter Reduce parameter
Main menu Navigation down, left Navigation down, left