3KW 220V Electric Swimming Pool Heater SPA Water Bath Hot Tub Thermostat Heater. B-M type thermostat, suitable for bubble pool, SPA tank, bathtub, children's pool, B-M2 2KW for small pools up to 1 ton, B-M3 3KW for small pools up to 1.5 tons, with a maximum temperature of 43 ° C.
eBay