... , expansions, various accessories and software, specially designed for GSM/GPRS wireless systems being used for remote measurements, data logging, control, ... be triggered by change of binary input state, reaching alarm thresholds, marker state change, counters and clocks. In ... a glanceØ Integral GSM 850/900/1800/1900 modemØ GPRS, SMS and CLIP supportØ Autonomous login into GSM/GPRS networkØ Different ...