... 5.UL,CE,RoHS,CQC approval ------------------------------------------------------------------------------Foshan Best WK Series Electric Water Heater Thermostat ControllerApproved by UL,CE,RoHS,and CQC ... ~+320°C(-31°F~608°F)Temperature Tolerance: 2°C~12°CElectric Rating:AC 400V 10A~250V 16AWiring Form: SPST & SPDT ...