Use Temperature Sensor to start Heater?

[RBoy (www.rboyapps.com - Making SmartThings Easy!)]

@Lwagenaar

I’m trying to control a switch based on temperature, (turning on a heater when cold)

If you have access to RBoy Apps you try some of these apps which allow you to use switches to control the climate through heaters, coolers etc:

[RELEASE] 5-2 Day Programmable Thermostat Scheduler (Weekday, Weekend) with Remote Temperature Sensor for each Schedule - #216 by maddie

[RELEASE] Humidity and Temperature Management with Scheduling (homes without HVAC/thermostats / using heaters and cooling appliances / vacation home / remote homes) - #22 by RBoy