1. Use for office, hotel or multi apartment
2. Max 9999 handset extendable without cable connection
3. Distance: 1000Meter in open area
4. Built in battery 1100mAh, four hours full charge standby time for 6days
5. 58 Ringtones
1. Input voltage: DC5-16V
2. Working Power: 70mA
3. Continue working time: 12Hours
4. Standby time: 6days Full charge time: 4hours
5. Placement method: hang on wall or put on table
6. Wireless intercom method: 2.4GHz
