Bit pricey but you can roll it any way you need it. They are nice since they are not on/off models, but proportional, or can be programmed for on off. so you can have it dim the basking lights so it remains at a constant 85f, and have the humidifier kick on at 50% and kick off at 55%, as an example. You would have to get the herpstat1 or above to use the humidity sensor.