... Two-way audio, Remote Pan/Tilt rotate Model : YD-IP4Our production introduce briefly . Built-in IR Cut ... ,No Color Cast. With 7 DB antennaYingdong YD-IP2 have great advantage :1, Professional maker ... stable warrant .we are from factory Sepcification in YD-IP3:1. MJPEG, CMOS 2. 10 LED, ... Built-in IR Cut,No Color Cast. With 7 DB antenna FeaturesSystem SecuritySupports there-level account, password ...