hhmoore
tired & cranky shadow
On/off mode - the set temp is reached, the power to the heater shuts off...the temp drops, the power turns on (as opposed to proportional, which adjusts the power going to the heating device to keep a constant temp...only shutting off if it goes over the set temp).
Proportional type tstats cannot be used with battery backups or generators, unless they are in on/off mode. Dion, from Spyder Robotics has posted an explanation of why.
Proportional type tstats cannot be used with battery backups or generators, unless they are in on/off mode. Dion, from Spyder Robotics has posted an explanation of why.