1)Wireless Doorbell 2)2.4GHz digital frequency. 3)12 melody for choice. 4)Crisp pictures. 5)Easy operate Wireless Doorbell Introduction: 1.Feature(1).2.5TFT Screen.(2).2.4 GHz Wireless Indoor Monitor.(3).Remote Video Intercom2.Function Install:Surface Mount(outdoor) + Portable Handset(indoor)(1).2.5TFT Screen.(2).2.4 GHz Wireless Video Intercom(3).Remote Communication.(4).Intelligent Remote ...