iUMS for iPhone lets you remotely monitor and control your video security system over a Wi-Fi or 3G connection directly from your iPhone, iPad, or iPod Touch. Have peace of mind by keeping an eye on your home or business anytime from anywhere in the world. Compatibility iUMS for iPHone works with the following DVRs: N-Series, HD-Series, CM-Series, ND-Series It includes following functions. - View up to 16 cameras at one location. - Monitor multiple locations from one app. - View in portrait or landscape mode. - Digital zoom on full screen. - Max. 16 channels can be selected to display split screen. - Single or split screen display. (To change from split screen to full screen, just tap the display twice. Double tapping the display again returns to split screen.) - PTZ support. - Playback support.