Meets both EN81-28 and EN81-71 standards. Available for connection to GSM or normal telephone lines. On-Site recording of identification and distress messages. Protocol: CPC, P100 and Q23.Caller ID Voice DD25. Automatic test alarm can be set between 1 to 60 days. Easy to change line cards between GSM and normal telephone lines. Car unit is ordered separately. Circuit board for 5012008
