Kuando Busylight Combi (15301) For Headsets & Desk Phones Lights Up Red When On The Phone. Manual Switch Changes Light To Bl

Kuando Busylight Combi - For Phones And Headsets. Connects To Your Desk Phone And Headset/Handset, Automatically Displays A Red Light When In A Conversation, Manual Switch Turns Light To 'Blue' For Do Not Disturb' Mode. Headset In Use - Lights Up Red When Using The Headset. Do Not Disturb - Lights Up Blue (Manually) When You Need To Focus On A Difficult Task. The Kuando Busylight Combi Is A Polite, Effective Way To Let People Know You Are In A Call Or Need To Concentrate Without Being Interrupted. Kuando Busylight Combi Is Compatible With 90% Of All Desk Phones And Headsets. It Is Not Compatible With Softphones And Usb Headsets It Is Not Compatible With Mobile Phones.