... zoom in and out *2-way speak,AV output *Night vision,Li-battery *CE/FCC 2.4Ghz 4 Channels Night Vision Li-Bettery Zoom in And out ... lights, and has a night vision distance of about 8m-10m. It can also be used as a door phone, put the camera in ... *2.5-inch digital wireless security camera kit*100% secure,stable signal, interference free, privacy.*200m transmit distance without block*Compatible with ...