- 8/16 Ports GSM/GPRS Modem Pool
- 2016-11-07 22:30
- -Echocancellation-NoisereductionData-CSDupto18.8kbps-Autoanswerfunction-USSD-Nontransparentmode-V.82biscompression-V.110
- 3 phases 4 linespower failure alarm system
- 2016-09-10 12:22
- 1.8 wired zones,open/closed alarm mode is optional by self-programming2.Fixed code: 40 wireless zones,315/433MHz(optiona