... detector, gas detector etc., can monitoring several kinds of alarms. Alarm receive status: Preset 3 groups SMS, 3 groups MMS, 3 ... Household gas leak, fire and other accidents,and give remote alarm Installed at the door, window, balcony door, important drawers, ... On-site Monitoring workerswhen renovation Monitoring the work of part-timer and housekeeper Monitoring children to learn, life in business. ...