Product category: security & protection > alarm & security systems Product description Gsm wireless home alarm, ccc, ce, ul, rohs approved, wireless alarm system, security alarm system 1. 10seconds voice and message recorded to transmit an alarm 2. Preset 6 phone numbers which can be dial automatically to inform theft 3. The pir detector can activate or deactivate separately 4. Arm or disarm with remote controller or phone in long-distance under password protection. 5. Alarm phone line has a priority when the phone line is engaged 6. User does not need to connect it with phone line because it can work as a mobile unit 7. Send short message to alarm 8. With built-in li-ion battery 9. Set up siren hooting time Standard unit:one english gsm main panel, one keyboard panel, one back-up lithium battery, two remotes, one advanced pir, one door sensor , one adapter, one mini siren . Gsm frequency:900/1800/1900mhz