Used to heat water by absorption of heat radiation or ambient heat. Model of a standard solar collector with especially low thermal inertia; absorber surface made of aluminium. Inlet and outlet chambers for inserting temperature probes to measure the water temperature. Frame on one side with 4-mm sockets for attaching and electrically connecting the STE water pump (
579 220) for collector operation with forced circulation. Including assembly stand, adjusting pin, plexiglass plate for covering absorber, supply container with liquid-level scale, tubing material and rubber stopper for thermometer or temperature sensor.