CB32GS - full description with technical support.
CB32GS is an upgraded version of standard CB32G for applications with low GSM signal level.
CB32GNS – blue backlight
CB32GZS – green backlight
CB32GBS – white backlight
CB32G includes in set a standard GSM antenna for instalation in places with low GSM signal level.
It is possible to plug in any external GSM antenna with a standard SMA connector as example shown at the photo below.
wire/magnetic external GSM antenna web page