ITC-308S Aquarium Thermostats Digital Temperature Controller for Freshwater Saltwater Aquarium Tank Tropical Fish Shrimp - Cooling Heating Control

Nice piece of kit.

Our little tortoise goes into her own fridge which is controlled by this, it replaced one that was about 15 years old so they last well, although it is only used for about 5 months a year.Very good if you need one.

Great product and good value, used to create a heated proofing cupboard from a old fridge for Pizza Poolish starter.

This is made the brewing of my beer so much easier that I can control the mash temperature then the boil and then when it goes into the fermenter again I can use this to do the same thing I can put it in my for Muntt cupboard which is an old refrigerator Which has got a heat belt around it so if the temperature drops the heat belt will come on if the temperature gets too high the refrigerator will come on keeping my beer fermenting at the correct temperature brilliant bit of kits

Works well easy to set up

In a nutshell this device will keep your fermentation at the right temperature with no intervention from yourself. It does this by monitoring your fermentation with a temperature probe and switches the power on and off to either the heater or the cooler socket depending on your set-up. You can choose from two different length probes when you purchase the unit a 2" or a 12" sensor, the length refers to the stainless steel tip.In the UK particularly in winter, the unit will only be switching the power on and off to your heater. In my case the temperature of the unit is to set to 23.5C with a permitted variance of +/-0.5C. The fermentation bucket or carboy is sat on a heat mat; inside the bucket or carboy I place a stainless steel thermowell stopper (purchased separately) and inside that I place the temperature probe (that comes with the unit). That's it, sit back and know that the Inkbird thermostat is taking care of things.The product itself is well made with sturdy cables, a clearly marked moulded pair of sockets for heating/cooling and an easy to use controller. The cables joining the unit and plug are premoulded and have kink protection. It also has a hook so it can be attached to the wall for easy visibility. The sensor probe can be unplugged from the main unit to allow for cleaning if required.My only criticism and it is a small one is the price, perhaps a little on the expensive side? Inkbird ITC-308S Dual Relay Digital Temperature Controller Thermostat, 12" Stainless Long NTC Sensor DC Cord, 1.97" Sensing Probe (ITC-308S + 12" stainless long NTC sensor)

I bought this after an aquarium heater failed and overheated my tank. Fortunately this occurred while I was at home and I was alerted with a high temperature alarm. When heater thermostats fail and lock on, the water temperature can become lethal within a couple of hours. I've lost fish before because of this type of failure so after a close shave I decided to buy the Inkbird ITC-308S.Setup was easy. Initially I installed the probe in the tank to get the average running temperature. I then set the target temperature (SV) to the temperature obtained previously & the heating differential (HD) to 0.3 centigrade. I also set the high temperature and low temperature alarms to 1 centigrade either side of the target temperature. I'm unlikely to use the cooling circuit of this device but it's available if we ever get a heatwave in the North of England!Update 26/07/18:Heatwave arrived 2018! The cooling option is working well with an air stone (to break the water surface) and a 4" USB powered fan placed downwards over the feeding hatch. The Cooling differential (CD) is set to 0.3 Centigrade so my aquarium temperature stays within 0.3 degrees of the target. Brilliant.Update 11/01/2020:After 2 years of use, I noticed the controller was reading 2 degrees Celsius higher than actual. I have been cross-referencing the reading with a couple of thermometers and until recently the temperature of all 3 was within 0.5 Celsius of each other. I have recalibrated the controller by altering the CA offset by - 2.0 degrees Celsius. I will keep an eye on this and if it wanders further will buy a new sensor.

I have two of them and have since bought another for a fellow home brewer. Don't bother with imitations - this is the best (even though it was designed for fish tanks LOL).