The Model 1509SD is a compact hub for audio-only applications. It can accommodate up to two Counter Stations serving up to four Customer Stations.

Dual IR sensor harness for 1580 (for use with 1583 units up to serial number 898) 

Adapts 1542P headset base stations (Plantronics CS540) with RJ-45 jack to be connected to the 1500A counter station.  Modular jack to 2.5mm.

The 1513B audio-video Hub supports up to eight Counter Stations and sixteen Lane Stations.

This expansion card allows up to four A-V Lane Stations on a 1510 series audio-video hub to stream video to an NVR. Multiple cards may be installed in one hub for a maximum of 16 lanes.

This expansion card for adds up to four Counter Stations to a 1500 Series Intercom System.

This expansion card allows the addition of up to four A-V Lane Stations to a 1500 Series Audio-Video Hub.

The 1510 Audio/Video Hub supports up to four Counter Stations and four Lane Stations.

The 1511 Audio/Video Hub supports up to four Counter Stations and eight Lane Stations.

The 1512 Audio/Video Hub supports up to eight Counter Stations and twelve Lane Stations.