I thought about buying a thermostat for my district heating radiators. But for the time being I just manage with a cheap thermometer and regulating the radiator

I thought about buying a thermostat for my district heating radiators. But for the time being I just manage with a cheap thermometer and regulating the radiator manually, because they already have a crude thermostat. It works quite good, because weather is not changing as fast day to day and heating season is not very long. Many times more technology equals more nuisance.