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Detailed Product Description GSM/GPRS MODEM(wireless modem) are based on GSM/GPRS network and adopts industrial wireless GSM/GPRS networks. It supports SMS, CSD and data function. F***3 GSM & F***3 GPRS modems are designed with industrial standard and have been widely used on finance, water supply, environment protection, electric power system, post and weather fields. Sale: Desmond (asia****** / khlek**1******) A.Wireless Specification 1. Dual-band (EGSM**0 / GSM ***0) 2. GPRS multi-slot class *0. 3. Compliant to GSM phase 2/2+. 4. Support DTMF. 5. Support SMS, CSD and data function. 6. Standard AT command interface. B.Hardware System 1. Interface: i. RS**2 serial port, rates: **0~*****0bits/s ii. Indicator lights: Power, ACT, Online. iii. Antenna interface: standard SMA female interface, *0 ohm. iv. SIM/UIM interface: standard user card interface. v. Power interface: standard *-PIN power jack. 2.Power supply: i. Standard power supply: DC 9V/0.5A. ii. Power range: DC ***0V. 3.Wireless module: i. High-powered industrial GPRS module. 4.Size: i. Outline dimension: *1x*8.5x*2 mm. 5.Weight: **0 g 6. Others: i. Operation temperature:**5~**5�C. ii. Storage temperature: **0~**5�C iii. Humidity: *5% (unfreezing) Kindly contact me * *@******************** more details