I guess the natural replacement would be the MV33. But you mentioned that the old one got faulty because of weather condition. Therfore you mid think of going for an outdoor camera. As the MV32 is a fisheye camera, the outdoort one would be the MV93 or the MV93X. The X has more storage. Besides that there are other outdoor cameras available like the MV72, MV72X, but with other optical specification.
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