https://www.danfoss.com/en-gb/products/dhs/electric-heating/indoor/analogue-thermostats/#tab-overview older drivers will be familiar with heating controls that look like this https://www.cnet.com/a/img/resize/6c98215814e60e5bea55b71f0947264b8d506772/hub/2017/08/09/6e483175-3304-4d28-80cf...