This Handset is compatible with the following Uniden Phone Systems
(Maximum of 6 Handsets in total per each Phone System; for Cordless and Corded/Cordless Combo Phone Systems):
CEZAI2998, CEZAI2998-2, CEZAI2998-3, CEZAI2998-4, CEZAI2998-5, CEZAI2998-6
EZAI2997, EZAI2997-2, EZAI2997-3, EZAI2997-4, EZAI2997-5, EZAI2997-6
EZI2996, EZI2996-2, EZI2996-3, EZI2996-4, EZI2996-5, EZI2996-6