The TSC-4 (K-4) Gecko 8 Buttons Topside Control (2 Pumps) is compatible with MSPA series control box (the big blue one), also the older white metal version. Sunrise Spas, Coast Mountain, Coast Spas, LA Spas replacement for Arctic Spas and more.

Dimensions:

Length: 178 mm
Height: 83 mm
Cable Length: 3m