... network video serveris the unique wireless high-definition video transmission equipment in China. base on 3G wireless network, transfer 4 Channel D1 full video ... at the remote PC or mobileVideo output : One channel full screen or four channel division screen Local Storage: 8M SD , ... HDD optionRecord mode: Manual , alarm ,timed Audio intercom : One channel BNC Two-way intercom, aideo code G.72X, bit code ...