Using Dynapass technology, a high level of immunity to system interference and jamming can be achieved: the built-in radio receivers permanently scan the most available channels, selecting the one that will provide an optimal radio link between the outdoor caller unit and the handset (Even during communication)
At the start of communication, the system selects a free radio channel. If any disturbance is detected on this channel during comunication, the system is automtically synchronised with another, more available channel. Dynapass technology guarantees excellent audio quality.
Because the manufactuer complies with the strictest industrial standards and performs 100% testing on each component, the doorphone is guaranteed for three years for parts and labour provided the guarantee cerficated is returned within 10 days of delivery.