Man atrodo paprasta ten viskas,jei taimeris tupas su ratuku,tas pigiausias,tai ir bus tik on/off,jei mandresnis,tai eko rezimu (darbo valandos,nakti,kai buni isvykes...)jis tiesiog  duoda komanda prie zemesnes temperaturos ir tiek,nes bent apie galvas is manualo tai tik apie atidaryta/uzdaryta rasoma:



When the thermostat senses that the temperature has fallen
below the setpoint, the controller sends a signal to the actuator
to open the valve. The indicator window on the actuator turns
bright.
When the thermostat senses that the temperature has risen
above the setpoint, the controller sends a signal to the actuator
to close the valve. The indicator window on the actuator turns
dark.