Another applications - Alphatech (en)

Intercom BRT
Based on NUDV, can connect up to 5 direct selection buttons, a button switches the direction of the second call and hung (a total of max.7 buttons). The relay is energized during a call (optical alarm call). The call can be limited in time, with each call, switch the direction of this period is extended. If one party hangs up, then the counterparty automatically hung. It uses the mechanics of the 1145th Urmet A simple description of the wiring and setup is in Fig.1 and Fig.2. Can be combined with an additional speaker.

The road call point
Emergency Communicators
Available in 3 versions:
ARM1000HF with one button
ARM3000HF with three buttons
ARM9000HF keyboard

Contains unit NLLW communicator.

Communicator for the establishment of medical
Instructions for this product here.
It serves the nurse-patient communication, further provides:
call a doctor
connections hanging keys
Tri-color signal according to
button connection of the shower and the toilet.

Listening the nursery
By changing the firmware and settings can be obtained from NUDV quality nursery interception of communications without unilateral power adapters, batteries, etc. The entire system is powered from the telephone line and can be combined as 3 pieces communicators tap children's room during the day in the living room and bedroom at night.