Basic Functions:
1. Suitable for GSM 900/1800MHZ or 850/1900MHZ frequency.
2. Pre-set IP number.
3. LCD display for date and time, signal, call ID, in-use function and reversal polarity billing.
4. Support external switch for group users.
5. Prevent from thunder attack.
6.Support external battery storage.(optional)
Characteristics:
1. High clear voice.
2. Rapid network searching, quick response for dialing, strengthened antenna, high sensitivity and harmless low radiation.
3. Adaptive to wide range of voltage with low power consumption.
4. Convenient installation on the desk or on the wall.