User's Manual

5
Chapter 3. Technical specifications
3 Technical specifications
3.1 General
 Outside Dimensions (mm): 45 x 55 x 19
 Weight: 1.7 oz / 48 g with batteries
 Power: 2xCR2 3.0V Lithium (LiMnO2) batteries (only one CR2 battery in A4+)
 External DC power (2.5V - 5.5V) from battery pack or the wall adapter for A4+
 Two buttons with call button functionality (connector for two external buttons for A4+)
 Two red/green/orange status indication LEDs
 Operating Temperature: 32 to 122 ºF / 0 to 50 ºC, battery lifetime is lower on the low and high
end of the temperature range.
 Storage Temperature: -40 to 140 ºF / -40 to 60 ºC, battery lifetime is lower on the low and
high end of the range. Storage in room temperature is recommended.
 Humidity: From 20 % to 95 % non-condensing, relative humidity
 Environmental Protection: protected against dust and spraying water (A4 only)
3.2 Operating Ranges from an Access Point
 Open Space: 60m (180ft)
 Typical Office: 30m (90ft)
3.3 Battery Replacement
Figure 3.1. Battery polarity and replacement
A4 A4+
Batteries are replaced by opening the four screws on the backside of the tag. Old batteries may
be removed from the device by pulling them gently upwards. After removing old batteries a 1
minute