Just to feedback here.

I brought the GSM unit on last week and installed on last weekend.
So far so good and good support from seller.

Wireless sensors is easy to install and zone already programmed by seller.
For me, I also added some wired magnetic sensor and I did spend alot of time on the wiring for wired sensors.

Cheers.

GSM Wireless & Wired Home Alarm System with LCD screen & Touch Panel!

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Features:
1. Touch keypad,LCD screen with time clock display;
2. 4 wired and 99 wireless defense zones; each zone with different programming way;
3. 1 programmable 12V relay output , Tamper alarm function;
4. 3 groups of timely arm and disarm,;
5. Built-in Listen-in function,two-way intercom speaker and voice prompt while operate;
6. 6 groups of call phone number, 3 groups of SMS numbers
7. 10-second automatic message recording;
8. Can send SMS to arm/disarm/check alarm record;
9. Remote control Arm, Disarm, Monitor, and Intercom by phone;
10.With back-up battery,SMS alert for power failure/recovery and arm/disarm.

Technical parameters
Power supply: AC=220V±10%  DC=12V (Built-in NI-HI) rechargeable battery
Standby Current: <60mA
Alarming Current: <450mA
GSM band:850/ 900/ 1800/ 1900MHz
Wireless Frequency: 433MHz±0.5MHz
Wireless receiving sensitivity:5mV/m
Anti-interference:1V/m (Frequency range: 20-1000MHZ)             
Working Temperature: 10°C~+40°C
Humidity: ≤90%
Wireless detectors: 99pcs

Standard pack components
1 main panel, 1 wireless PIR detector, 1 wireless door sensor, 1 indoor siren, 2 remote controllers, 1 power supply, 1 manual

Remark:
Warranty One Year
Customer Feedback
PSTN Wireless Home Alarm System With LCD Screen