GSM SIM Card Desktop Wireless Phone Home Landline Telephone

GSM fixed wireless phone is a new wireless telephone, self- designed and manufactured using advanced technology. It can access the existing GSM mobile cellular networks directly without wire. In the range of GSM mobile telephone network , which means that the pass . The method of operation is similar to an ordinary wired telephone. It has caller ID, call history , call dial the area code Sweeping IP phones and hands free function. It is adapted to the needs of modern wireless communication manager. Specifications: Operating frequency : ? GSM900MHz and GSM1800MHz Output power : ? GSM900 way : Class 4 (2W) GSM1800 mode : ?lass 1 (1W) Working Temperature : 0? ~ 55 degree Relative humidity : ?5 % to 95% Adapter input voltage: AC 50Hz, 220V +10% Backup battery: Ni-MH battery , 1000 mAh Standby time : ? 48-72 hours , dependon?network status may?