BENTEL ABS-GSM ONLY FOR CENTRAL ABSOLUTA.(Antenna is part of ABS-GSM code)Option card for car alarms Absoluta series with GSM / GPRS communication.Features:• Transmission of messages Contact ID on the GSM voice channel. • Voice messages on GSM. • Remote programming with B.O.S.S using the GPRS channel. • Simultaneous transmission of PSTN and GSM .. • Remote listening function to GSM. • SMS can be generated for each of the main event. • Reception of SMS for the generation of centrally events. • Caller Recognition. • Control of the remaining credit.