Model No.:JB-303
Product Origin:China
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Description:Product Base Function: 1. One outdoor unit can connect with 1 to 6 indoor units 2. To be able to watch and talk with the visitor through the screen of the extensions and unlock the outdoor 3. The door set is equipped with the infrared diode. It has a contrary light compensating automatically to ensure the clear picture of the visitor 4. To press the MONITOR key or raise handlebar to keep watch on the outside 5. The ringing is produced by one chip set with the sound pleasing to the ear. Especial Function: 1.Maximum 6 indoor units; 2. The door set is equipped with the infrared diode; 3. Inter-Talk indoor units,Transfer Calling between Interdoor Units. Polymath Electronics Pruducts. (Polymath Related Company)