I use a wireless sensor acurite but it really can only be used for air temp and humidity. You need a thermometer with a probe or a temp gun for your floor heat. It works great for air and humidity though. The wireless sensor is to big and bulky to put on floor in a hide where your snake would lay, it wouldn't leave any room for him/her. Plus how the sensor reads the temp and humidity it just wouldn't be an accurate reading of substrate/floor temp.