... card, and supports WCDMA 3G network Two-way intercom and on-site shouting function ... two-way intercom and on-site shouting functionRemote control by mobile message, which is confidential and safeSupports SMS alarm, video call alarm ... and stores, and can also monitor the mobile car, steamboat, and the train Technical parametersPower adaptor ... 0 MP WCDMA 3G Video Alarm Camera With Two Way Intercom Function