The Sensaphone Environmental Monitoring Systems are extremely versatile and can accept various sensors. You will find sensors for just about any condition you would need to monitor in your home, business, farm, greenhouse, and vacation cottage. If you need assistance choosing what sensors you need for your application or unsure of sensor compatibility, we have provided comparison charts below to help make your purchase as easy as can be. If you require additional assistance you can contact our tech support team via email or phone at 1-800-487-1363, support@diycontrols.com.