No safe generic
14V is an unusual rating and the plug and polarity are unpublished.
Conference rooms / Konftel
Konftel AC adapter for the wireless conference phone, plus an optional battery and charging cradle
Verified November 2026
You need: AC adapter 900102125
You need: Charging cradle 900102094; battery 900102095
You need: Its sheet lists a different charger, 900102096
Polarity not confirmed. Read the label on your item.
Buying part 900102138 as a spare: sellers list it as a 300Wx base station with a 5V supply, and the datasheet's AC adapter is the 14V 900102125.