-No wiring required for instant operation,

-2.4 GHz operating frequency.

-With rechargeable function.

-100 meters operation distance (free lane).

-2 - way conversation.  (Bi-directional speaking system).

-Conversation time: Automatic cut off after 90 seconds.

-Door opening function.

-With adjusted volume control.

-With ringing tone control.

-Operated by rechargeable batteries (DC 3.6V), or external adaptor.

-Battery life: up-to 120 hours standby/ up-to 5 hours talk-time.

-One outdoor station can connect up to 4 indoor units.

-With incoming call forward function to the sub-unit.

-Product size: (stand):160.3mm x 117.3mm x 43.5mm;

 (portable handset):152mm x 47.8mm x 30.0mm.