Poly EncorePro HW510/520 Foam Ear Cushions (2 Pieces), Part# 85Q31AA Doorbird accessories Each input is monitored and

Each input is monitored and can be programmed to trigger a digital audio message into a specific zone or group of zones

Bundled CD for easy operation

The quality Bogen PRSLSI 24VDC Power Supply

The efficient Valcom VIP-148AL-GY IP Talkback Horn in color Gray enables two-way

Anti IP/MAC Address Spoofing

Poly EncorePro HW510/520 Foam Ear Cushions (2 Pieces), Part# 85Q31AA Doorbird accessories Each input is monitored andThe durable Poly 85Q31AA EncorePro HW510 520 Foam Ear Cushions (2 Pieces) is designed for HW510 & HW520 Headsets. With the pair of Foam Ear Cushions for HW510 HW520 Headset from Plantronics to have spare ear cushions to replace the ear cushions included with the headset. NEW IN THE BOX