STC-1000 Dual Relay Digital Temperature Controller STC-1000 Digital Temp Controller More Info XINGYHENG STC-1000 DC 110V-220V 10A Microcomputer Digital Display Temperature Controller Thermostat Control Switch 2 Relay Output Cooling Heating and NTC 10K Thermistor Sensors Temperature Probe – note that multiple variations of this product may be available, as such a different version may appear at this link Also: Inkbird Itc-308 – [Review]| Yeast Starters & Fermentation | Kegerator Tips & Gear | Inkbird Temperature Controller Deals and Reviews!