1,This SMS Alarm systen only work with 2G SIM card.
2, If you want to buy more sos buttons , need extra 5usd/pcs,thank you!
Emergency GSM Alarm System with SMS
1. Adopt GSM 850/900/1800/1900 bands, can be used all over the world.
2. Can perset 5 phone numbers: when there is an alarm, it will call these numbers in order. Press DISARM button on the main panel, it will stop alarming.
3. Can per-set 5 SMS numbers: when there is an alarm, it will send SMS to these numbers.
4. Maximum 30 wireless sensors including wireless panic button or remote controllers, etc.
5. 2 wired ports to connect wired sensors.
6. The SMS content of the first 5 wireless sensors can be edited by users.
7. Support remote listen in and two-way communication (connect an external speaker).
8. SMS alert for power failure or recovery.
9. Built-in backup rechargeable battery to keep working after power off.
Power: DC12V/ 1.2A
Status current: ≤30mA
GSM bands: 850/ 900/ 1800/ 1900MHz
Wireless receiving frequency: 433MHz ± 0.5MHz
Receiving code: ASK
Wireless distance: no obstacle 80m
Working temperature: +10~+45degree
Working humidity: ≤90%
Backup battery: 3.7V/ 500mAh