Premium quality high limit temperature switch, surface mount disk, used in Sundance Spas Smart low-flow heater assembly and Len Gordon equipment.
Product notes: Surface mount with terminal screws. SPST. Part Number: 6000-093, #2-05-0110, RME-215A4908-1.
Definitely a good sensor and meant for a spa! I found out that the one needing to be replaced was for a dryer!