GP1/DL6 GSM - Modem System - User Manual
The GSM Modem System provides battery powered GSM modem communications for GP1 and DL6 loggers. Three power options are available: Solar powered internal rechargeable lead-acid battery (GSM-BX1/SP). Internal lead-acid battery with timer (GSM-BX1/IB). Timer and cabling for an external lead-acid battery (GSM-BX1/EB).