Product Description

1) GSM 850MHz 900MHz 1800MHz 1900MHz 2) standard RJ-11 to telephone or voip gateway & PABX 3) 450Hz Dial-tone and Busy-tone 4) 50V in idle and 75V in ringing and 9-12V in talking 5) DTMF detector in RJ-11 6) precise reverse polarity 7) caller ID (DTMF,ONE RING) to telephone or voip gateway & PABXcaller id (FSK) to telephone or voip gateway & PABX(Optional) 8) Short message service 9) DTMF Dialing; 10) CLIR(Calling Line Identification Restriction) 11) single-handed power switch 12) LED indicating Hook On/Off,Talking,signal intensity,Power On/Off 13) set dialing delay time 14) talking DTMF Automatic dialing to GSM & to voip gateway & PABX(Optional) 15) SPK & MIC volume regulate 16) provide accumulator charger (Optional) 17) 4SIM automatic rotator (8 CHL 32 SIM cards)(Special Optional) - rotator by really clock(4 time oclock) - rotator by dial times - rotator by total talking minutes - rotator by working hours 18) IMEI changing (Special Optional)19) Simple to install and easy to maintain 20) Steady module & reliable design ensures good performance 21) Strong signals with high gain antenna 22) No noise & Clear voice 23) Suitable for wide voltage range & Low power consumption 24) Suitable for all kinds of weather & environment 25) Offer keypad command sets to difine functions MSN:szrunsunsale03[at]hotmail[dot]com Tel:+8618688785155