System diagram (click to enlarge)
Digital Two-Wire Villa Intercom System Kit
Features:
Digital technology; All 2-wire connection
Intercom, monitor, unlock
Double unlock button
Picture memory; Voice message leave
Privacy/do not disturb feature
IC Card reader for entry optional
Available to adjust unlock time, monitor time, communication time, ringing time, etc.
Available to connect with doorbell & exit push button
Anti-dismantle alarm feature
Product wiring:

305 Cost-efficient Analog Villa Intercom System Kit
Features:
This system is available with calling transfer between indoor monitor
Talk Volume & Ringing Volume can be adjusted independently
Ringing volume can be mute
Easy surface mount installation
Support 2 outdoor stations & 4 indoor monitor for large villa
4-wire series connection saves more wiring cost
Product wiring:

305 Analog Villa Intercom System Kit
Features:
DIY system with 4 wires; PLUG & PLAY connection
Various flexible connection diagrams are optional
Max. capacity: Up to 4 door stations and 4 indoor phones
12 melody ring tones are optional
Use two group passwords to release two doors and gates(Model No.18)
Double unlock buttons to release two doors/gates/garages....
Use cards to release the doors
Surface and flush mount are optional
Rainproof and anti-vandal
Night viewing; illuminated call button
Privacy functions are available
Product wiring:
