I read about the type of the device before I buy it and found kind of GAMMA (ali 3329B DVR)Series
ALI 3329-DVR
DSB-900FTA (SST&INTEL)
DSB-2300 2CI
DSB-3000 IR
DSB-3000 IR PLUS
EL-5050 IR CI Super
Echolink EL-707 FTA Plus
Echolink EL-708 FTA
Echolink EL-709 FTA Plus
Echolink EL-808...