AT&T DECT 6.0 Expansion Cordless Phone Handset with Caller ID for CL81101, CL81201, CL81301, CL82101, CL82201, CL82251, CL82301, CL82351, CL82401, CL82451, CL82501 and CL82601. *** PLEASE NOTE *** This Accessory Handset Can Be Used With the Following Models: CL81101, CL81201, CL81301, CL82101, CL82201, CL82251, CL82301, CL82351, CL82401, CL82451, CL82501 and CL82601.