Models SCE and SCB are electronic thermostat controls with ELV and 240v outputs respectively. Each has a pump socket (10A) and a high limit cutout at 45°C which shuts off the pump and heater supply. L.E.D.s indicate the power, pump and heater status.

Models SCE02 and SCB02 are the same as the models above with the addition of two air operated switches. The SCB02 has a 15A power lead.

All air switch models may have a clock incorporated for operation of the filter pump and are designated SCE02T and SCB02T respectively.