Steve
Senior Member
The description from Elk is:
A two way listen-in kit was designed so that in case of an alarm in the premises the central station (or whoever may be monitoring your house) can listen in via the microphones to what is going on in your house. There is also the ability for them to speak to whomever is in the house through the speakers, hence two way audio. Check with your monitoring company to insure they support two way audio.
Provides 3 zones of amplified speaker outputs with adjustable volume, along with 3 zones of microphone inputs. The M1TWA can be used to add two way listen-in to the M1 Control or to just add amplified speakers at keypads and other locations in a building. Each of the 3 amplified speaker zones can drive a maximum combined impedance range of ~4 to 32 Ohms, permitting multiple speakers to be connected. Each zone includes a mute option that is triggered via an output from the control. The 3 microphone zones can handle up to 4 individual microphones each.
A two way listen-in kit was designed so that in case of an alarm in the premises the central station (or whoever may be monitoring your house) can listen in via the microphones to what is going on in your house. There is also the ability for them to speak to whomever is in the house through the speakers, hence two way audio. Check with your monitoring company to insure they support two way audio.