... wireless auto dial Business/Home GSM Alarm System 1. 900/1800/1900 bands2. Full duplex communication with the base.3. Monitor environment on ... alarm ON, OFF , Monitor ,Output.7. Send SMS to set alarm ON, OFF , Monitor , Output .8. 5 group phone + room number9. 1 group alarm ... , warehouse, orchard, factory floor. hot sale safe house alarm wireless auto dial home security Business/Home GSM Alarm System