1)GSM Frequency: Dual-Band(900/1800MHz), Quad-Band is optional(850/900/1800/1900Mhz) ;
2)Supports armed, disarmed by SMS or remote control or telephone;
3)Supports start or stop the siren by telephone or SMS command;
4)Supports Swith On or Off the output relay by telephone or SMS command;
5)Automaticed send SMS Alert and dial to the pre-set cellphone when any sensor triggered;
6)Equips with 2 Wired Zones,NC/NO, and Zone Name is editable;
7)Equips with 8 Wireless Zones, Zone Name is editable;
8)Supports 3 SMS alarm cellphones and 5 dial alarm telephone numbers;
9)Equips with 1 relay output, it likes a switch, use for driving DVR, light, gate or other electric appliances once the system activated;
10)Reserved 12VDC power source from the control unit for wired sensors;
11)Supports external power failure&recovery alert function;
12)Supports wiretap through internal Mircophone;
13)Supports wired and wireless siren;
14)Supports alert user by SMS when the remote control has been used to control the system; this function can enable or disable by user;
15)Standby internal rechargeable battery which can last 12 hours;
16)Based on the GSM communication network and Voice Operation Menu technology, apply to wide range situations.

>>>3. Technical specifications of S3526 Control Unit
Rated Voltage      : 12VDC 1.5A
Work frequency     : GSM900,1800Mhz
Communication protocol: GSM PHASE 2/2+ (include data service)
Wireless sensor receiving frequency: 433+/-0.5MHz
Wired Zones:    2
Wireless Zones: 8
Related Voltage of the Output Relay:         2A/250V AC
Effective distance of wireless transmission: 100 m (Open area)
Back Up Battery: Built-in lithium-ion battery: 1000mAh 7.2V
Standby time : Approx. 12+hours (depending on the network condition)
Working temperature: -10℃~+60℃
Storage temperature: -20℃~+60℃
Relative humidity : 10-90%, No condensation
Net Weight   : 0.80Kg

>>>4. Standard Packing List
Control Unit x1
Wireless Magnetic Door Sensor x1
Wireless Remote Controls   x2
Wireless PIR Motion Sensor x1
Wired Mini Siren(110dB)    x1
GSM ANT     x1
Regulated 12vDC Power Supply x1
User Manual x1
>>Optional Accessories: (Wired or Wireless Sensors)
PIR Motion Sensors,Glass Break Sensors,Magnetic Window Sensors,Magnetic Steel Scrolling Door Sensor,Temperature Sensors,and Other Sensors.