·  Second-line unlocking doorbell Doorphone.
·  Two-cable connection.
·  with unlocking function.
·  Aluminum alloy outdoor station with the anti-oxidation and wear-resistant surface treatment, durable using.
·  Outdoor station can display the name or number of household, with LED light instruction.
·  There have excellent circuit to eliminate the side noise, intercom voice clarity.
·  Effective distance: more than 100 meters intercom (2x0.75mm).
·  Easy installation, the user can self-install it.

Scope：

Villa,Family,Office,Authority units Etc.