Product Parameters:
Name: Audio intercom system for apartment
Mode: LSD-919DA

Product Specification Packing list Others
Anti-oxidation aluminum alloy case.
Numberic-keypad panel,input Room Number to call indoor phone.
ID unlock or password unlock available.
Buttons with LED light for night vision.
Wire diagram:3 wire from outdoor unit to signal allotment unit,2 wire from signal allotment unit to indoor phone,no polarity.
Installation method :surface mounted.