'- Provides 2-way conversation between one front door intercom and every telephone in the house- Seamless call-waiting- Sends a distinctive ring to phones alerting you that a visitor has arrived- (2) different ring patterns from which to choose- Compatible with the DP and IU Series front door intercoms- Only (1) pair of wires is required or the existing doorbell wire can be used- Unlock Doors or Gates Remotely- Whole-House Audio Paging- DSL Compatible
