The ring doorbell Key Specifications/Special Features:

-Doorbell via 4G network to make call
-New entrance intercom (door phone, entry system) and an ideal product replacing
the traditional entrance intercom
-Allows you to speak with visitors standing at your company or house entrance by
simply pressing the door button and you can open the door for them while talking
with the visitors by operating your handset
-Gives you opportunity not only to know who is waiting in front of your company or
house even while you are on holiday but also to control access
-It does not require any special installation and wiring but only need to connect to
the door latch and power supply for their operation since the door phone system
permits communication via 4G networks
The smart doorbell support 3 Users+ 1 Administrator.
The smart home support Any Phone [Any Mobile Or Land-line Phone Regardless Of
Region].
The doorphone No any installation or wiring required for indoor apartment.
nbuilt Quad-band 850/900/1800/1900Mhz GSM module, 3G & 4G is �optional;
Secure-using caller ID for identification, unknown callers are ignored.
Support SMS, PC software to edit information for resident by SMS Text commands.
Relay Outputs (NC/NO).
User friendly design, TFT Screen, alloy outer case and enduring lifespan;