4000 traditional system
4000 vandal resistant system
4000 true 2 wire systems
8000 traditional wiring
VR130 traditional wiring
Traditional video wiring
Old video systems used a 6 core cable to each monitor. Two monitors can be connected per button. The monitors have 51 or 56 suffix.
True 2 wire video systems
These villa systems have a 2 wire bus that connects all compontents.
Systems can be enlarged to 50 to medium size apparment blocks and extra door panels.
Compatible monitors & handset codes end in 81 to 88.
Keypads are essential on UK call panels. Most have 3 relays, programmable from 1-99 secs.
A typical use might be Code 1 to open a gate for 30 secs, and Code 2 to open the gate and keep it open indefinately. Code 3 could open the gate half way for pedestrians only.