Features: Doorbell performs bidirectional monitoring, bidirectional intercom, photo and video between handheld terminals (including smartphones and Android tablets) and the doorbell through a wireless network. Specification: Plug: 100-240V US
JC Wireless GSM&WIFI DIY Smart Home Security Alarm System Size: 7.28″ x 4.92″ x 0.57″ Screen:2.4 Inch TFT Digital Screen Function:Operating System with Multitasking Design; Automatic Alarm Indicate when