... Voice communication are available; 2)LCD displays the entire setup menu FeaturesThe advantages of the GSM Alarm System1)Two-way Voice ... ,24Hours Zone, SOS zone are available;6)Using ICON to display armed, Partial Armed, Disarmed, Power status, Siren status and ... hours;18)Based on the GSM communication network and Operation Menu Display technology, apply to wide range situations. Notice: 1.Goods will ...