Inkbird ITC308S Temperature Controller for Aquarium with Submersible Probe, Heating Cooling Outlets Thermostat for Heater and Cooling Fans

This device saved 20 of my fish! It has an alarm you can set for a certain range and it'll sound if the temperature goes below that number. We had unplugged the heater itself from the Inkbird while cleaning the tank, forgot to plug it back in, and went to bed. It was winter and the temperature kept falling, and without any way for the device to turn the heater on like it normally would, it woke us up and we found our poor fish on the brink of freezing to death! They were moving very slowly and looked pale, so if it didn't wake us up, we probably wouldn't have gotten to them in time or maybe we wouldn't even have figured out what was wrong right away. I have an Inkbird on all 4 of my tank's heaters. I'm so grateful it saved my little friends. It works great, it's easy to read from a distance, easy to install, and it's a worthy investment

I have had no problems with this device. The temperature gauge is very close to my other 3 gauges I use to measure temperature in my Red Sea aquarium. It is set up to turn my fans on and off when hitting a high of 80 and a low of 77. Works like a charm.

I couldn't get the OEM thermostat for my 30 year old commercial refrigerator, so I hooked this inline unit up instead...and it's great! Tight, programmable temperature control with an easy user-friendly interface. I use several Inkbird products, and they're all good.

Love it. I have read several horror stories of people being at work, school, or vacation, and while away their heater malfunctioned, and kept getting hotter and hotter, and they came home to their fish basically being cooked.. So sad.. And preventable - with this device!If the tank gets above a certain temp [which you must program] the device will turn off your heater! Or if you have one it can even turn on a chiller! You can also program for an alarm noise to go off if it gets above/below a certain temp in your aquarium - such a cool gadget!Programing it was slightly difficult. BUT even if you unplug it, what you had programmed is still there, which i love, as i unplug during water changes.BUY THIS NOW AND PREVENT A DISASTER!While I was traveling abroad earlier this year it was such a relief knowing if the heater malfunctioned that my froggies would not be boiled to d34th. <3

I bought this controller about 1 1/2 years ago and this just happened, I wish I could just buy the part I need. Great product just doesn't last long.

If you’re using this for a cold plunge this is the one to get do not get the one with the metal probe exposed and not covered with silicone, that one will fail.

I bought this for my 300 gallon aquarium and found the price and functionality to be great.Pros:Very simple, straight forward, and easy to use.Setup takes only a few min and doesn't require an app download to manage.Priced very wellCan control both heating and cooling unitsCons:If you have two heaters and you want one to come on at a different temperature, you can't. Although there are two plugs, they're set up specifically for heating on one and cooling on the other. I used a plug splitter to add more than one heater, but they both come on and turn off at the same setpoints.If you're the kind of person who needs information available even on the go, this does not offer that type of connectivity for wifi monitoring.

Highly recommend this product. Would definitely purchase again. Very easy installation and good value for price point