1+n-Technology
The very low cost 1+n-technology can be applied with already existing door openers. The series 835/2 and 835/3 with the house phone HT925/5 can be applied up to 50 units. The series 7100 with house phone HT 7105 up to 120 intercom stations and more. The systems are secured against eavesdropping with call difference, building tones and floor tones.
Interphone series 7105
The house phone HT7105 in 1+n-technology is secured against eavesdropping. It distinguishes itself with a very high interference voltage stability and a loud and high-quality voice reproduction.
Interphone series 925/926 (1+n)
An ideal solution for exchanging an already existing bell with a door opening system. The different designs of the house phone series HT925 or series HT926 can be installed, instead of a door opening button.