This ad is for a NX-534E Two Way Audio Module - For Use With NetworX Series Caddx NX-8 / NX-8E Alarm Systems. It is new in the box, never used. Includes the installation / startup instructions.
The NX-534E is a two-way audio (voice) module that may be added to a NetworX control panel. Once the PSTN dialer of the alarm panel has communicated an alarm, the NX-534E will allow a monitoring service operator the ability to monitor a customer's premises for "listen-in" purposes or basic two-way voice communication. This procedure is controlled from the central station by use of a touch tone telephone.