This 6-button hand control is compatible with most Golden Technologies Maxicomfort series lift chairs (including the PR-502) with the Independent Position recline. If you have a Maxicomfort chair there is an updated version to this remote with programmable positions. (see part# ZKAD-1) Manufactue: Golden Technologies Model Names: Cloud, Relaxer, Cirrus, Comforter, Maxicomfort. Model#: PR-502, PR-505JP, PR-505S, PR-505M, PR-505L, PR-508, PR-510-SME, PR-510-MLA, PR-756MC, PR-756L. Part#: ZK756HCL