color video door phone,video doorbell,remote controled,2.4" TFT LCD Monitor,factory ... ,accept OEM color video door phone,video doorbell,remote controled,2.4" TFT LCD Monitor,factory good ... camera,work well even in dark environment;2.4 G Frequency-Hopping Spread Spectrum technology afford ... ODM are both highly welcomed. Digital 2.4" Color Video Door Phone With 200M Remote Distance Factory Newest Offer ...