RBoy
(www.rboyapps.com - Making SmartThings Easy!)
10
Monoprice is a good motion/temperature sensor combination at a reasonable price:
You can also check ZooZ products, very reasonable. Just note that the more features you have in a single device the lower the battery life.
Here is one designed for electric floor heaters which could be a one stop solution.
http://z-wavealliance.org/heatit-z-wave-thermostat-first-z-wave-thermostat-electric-floor-heating/