? Satisfaction Guarantee ? - We offer industry leading customer service on all of our products. If you are not satisfied with our thermostat controller, please contact us. We will help you to solve your problems. ? Applicability ?- Simply set the temperature probe, plug-in the controller, and use the large button interface to choose your desired temperature setting. Suitable for use with heating rods, you can control the temperature you want. ? Widely Used ?- Heat mat thermostat provides constant customized temp for Seed Germination, Rooting, Reptiles, Homebrewing and Fermentation, keeping your various environments in their ideal temperature range. ? Friendly Interface ? - LED display , easy to read, operates,and set the parameters, You can see the status of the controller even in total darkness. Can choose COOL or HEAT mode Can switch between °C or °F, Controller features a convenient hanging tab. ? Upgraded Version ?- Digital temperature controller for heat mat in colder or warmer environments, Can adjust temperature difference and have adjustable output delay function to protect compressor, Temperature measuring range :-40~110°C Temperature controlling range:16-40 °C. Equipped with waterproof NTC sensor, can be used in a variety of scenarios.