Electronic differential temperature control with one differential setting, 2 collector sensor and 2 tank sensors.

Illuminated digital readout (in F or C) with user-friendly menu operation capable of managing two collector field and

two domestic hot water storage tanks, 2 control relay outputs, 4 sensor inputs, and 10 system configurations.

Communicates via Vbus with optional equipment.

4-1/4 inches wide - 6-3/4 inches high - 1-3/4 inches deep