The GSM business telephone follows the usage of ordinary of telephone while it contains the communication functions of a handset. With built-in charging system, there is no need to buy an external one, thus saves money. It solves communication interruptions caused by voltage fluctuation and power down problems through using backup LI-NI battery. This product has been widely used both at home and abroad thanks to its powerful functions and easy operations.
Features:
1. Industrial GSM module(support 900MHz/1800MHz/1900MHz)
2. Menu in English, Chinese and Spanish
3. Voice volume adjustable
4. Network management function
5. Internal LI-NI backup battery
6. Support English, Chinese and Spanish SMS
7. Display of dialing calls, incoming calls and missed calls
8. Preset local handset numbers and block numbers
9. Locking network, SIM card, and machine and card together
10. Preset local prefix and IP access number
11. High quality of talking voice
12. Battery talking time:2-3 hours, battery standby time: above 48 hours
13. GSM wireless internet surf function
Specifications:
1. Frequency: 900MHz/1800MHz/1900MHz
2. Power supply: 110~240V AC, 6V DC 50/60Hz
3. Temperatures: 0¡æ~+50¡æ
4. Humidity: 10%~95%
5. Pressures: 86~106KPa
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