Comes with a cooling side (plug in your fridge, freezer or AC unit) as well as a heating side to plug in your heat source. Set your desired temperature and walk away. Perfect for home brewing. It's easy to use and economical.

• [WIFI & APP] WIFI smart controller supports both IOS & Android WIFI supports 2.4GHz Wi-Fi router, free APP “InkbirdSmart” which is able to monitor temperature at any time. 
• [Dual Relay Output] Dual relay output, which can connect heating and cooling device at the same time. 
• [Alarm for Safe] High/Low temperature limit setting alarm. 
• [Convenient Design] Plug-n-play, easy to use. Support ℃/℉ reading and Temperature calibration. 
• [Long Warranty] The controller itself has 2 years warranty while the temperature sensor has 1 year warranty. Maximum output load: 1100W~2400W(110V~240V).