... intercom, photo shooting function, e-lock unlock controller wireless digital door viewerwireless peephole viewerwireless video doorbellwireless peephole camera ... Description:This is a 2.4GHZ wireless digital door viewer with doorbell, photo shooting function, ... input: 100-240V 50/60Hz, output: 5V/1A, USB cable length: 80cm.(3) Extended pole with diameter 35mm, extended ...