Inkbird Heating Thermostat Aquarium Reptile Submersible Probe Sensor ITC306T Heater Relay Digital Greenhouse Temperature Controller Dual Stage Timer Time Switch ONLY Heat Plug Outlet NO Cooling
$29.99
Price: $29.99
(as of Oct 24, 2025 01:58:21 UTC – Details)
From the brand
Swipe left to Learn More→
New Release!!!
New Release!!!
Hygrometer Thermometer
Chemical Dispenser&ITH Series
Thermometer
New Release!!!
ITH-10/12S & Humidifier
ITC-308 Series+ITC-608T Series
IBS-TH2 Series
IBS-TH1 Series
New Release
INKBIRD is founded by people with lofty ideals, by whom the mission is dedicated to changing lives with intelligent technology. INKBIRD believes that premium products constructed by smart technology and closed to life could help each person lead a free and progressing life like a flying bird.
Is Discontinued By Manufacturer : No
Package Dimensions : 7.56 x 4.17 x 3.43 inches; 15.2 ounces
Item model number : ITC-306T-LW
Date First Available : June 11, 2018
Manufacturer : Lerway Tech
ASIN : B07DN9K7PH
Best Sellers Rank: #50,349 in Pet Supplies (See Top 100 in Pet Supplies) #128 in Aquarium Heaters
Customer Reviews: 4.4 4.4 out of 5 stars 507 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
2 heating outlets; Aquarium sensor heater for aquarium and reptile
It supports 2 different temperatures with its function of dual time cycles setting during 24 hours according to the day and night, which can be more suitable for the needs of aquarium
This plug-and-play controller is designed with dual displays and offers the optional display of Centigrade or Fahrenheit
The temperature can be controlled more accurately with its function of temperature calibration
Celsius or Fahrenheit Display can be chosen; Over-temperature and sensor fault alarm; Dual display windows, display the measured temperature and set temperature at the same time
Customers say
Customers find the temperature controller dependable and effective at maintaining tank temperatures, with one noting it brings new life to old heaters. They appreciate its accuracy, with one customer mentioning it’s more precise than internal thermostats, and consider it good value for money. While some customers find it easy to set up, others find it tricky to configure. The included instructions receive negative feedback from multiple customers.
10 reviews for Inkbird Heating Thermostat Aquarium Reptile Submersible Probe Sensor ITC306T Heater Relay Digital Greenhouse Temperature Controller Dual Stage Timer Time Switch ONLY Heat Plug Outlet NO Cooling
Add a review
Related Products
$29.99
Linda A. –
Great value for heater controller!
These temperature controllers work great! We keep at least one extra on hand all the time. We are slowly replacing our older finnex ones with these in all our tanks. They are easy to program, and easy to read from a good distance away. One thing we really like is the replaceable probes. The probe cables eventually deteriorate (2+ years) with the finnex units and we end up throwing the entire controller away. With these Inkbird units, if the probe cables do the same thing we can switch them out and keep the controller.The minimum step temperature you can set is 1 degree F. That means if you want your tank to be at 79 degrees, the setpoint is 79, and the step is 1. When the tank gets to 78.0 or below the heater will turn on. When it gets above 79.0 the heater will turn off. You can set a larger step but not a smaller one. If you have a minimum you want to maintain, then set your set point minus the step to that temperature to ensure it always stays above the minimum. It would be nice if the minimum step could be 0.1 degree instead but that’s not a hard problem. You need some hysteresis or the control will oscillate and rapidly switch the heater on and off.
shopperchick –
Safeguards the fish and easy to set up
Why did you pick this product vs others?:LOVE THIS!!!!! This is the only way to safeguard the fishies from heater malfunctions that will result in them getting cooked. Opted not to use the time function so programming took less than a minute. I have one of these for all 7 of my aquariums and love the peace of mind knowing my fish are safe from overheating!!I showed the steps in a video – for this tank I want the temp to be between 76-77 and not below 76 so I set the ts1 to 77 and the ds1 to 1 so that when the water temp falls to 76 the heater will kick on until it reaches 77 and then the power supply to the heater will cut off. I didnât use the time function (so left the tr at 0) for 2 reasons. First, I donât need a different temp day vs night and second, I live where there are frequent power outages and didnât want to deal with the error messages or resetting the time. For those having a hard time with programming, here are quick instructions that go with the video (not using the time feature and setting tank temp to be 77 with a 1 degree temp differential):Hold set for 3 seconds – push set button to cycle through to get to CF and arrow up or down to pick Celsius or Fahrenheit – push set button to save and move to next options – leave tr at 0 for no time setting – ts1 is the temperature you want to maintain so use arrow buttons to select temp – push set to save and move on – ds1 is the differential temp to select when the heat source kicks on so use the arrows to choose how many degrees below your ideal temp before the heat source turns on – push set to save and move on – ca is the calibration but can be skipped if the probe is showing the actual temp – hold set button for another 3 seconds to save settings!!!Fantastic device to safeguard your fish!!! Highly recommend!!!
Andy Nonimus –
Peace of mind for temperature control
We keep fish. And we all check the tank temperature every day to assure the heater(s) are still working. And we use more than one heater to spread our bets. But then we set up auto-feeders when we take a well deserved vacation, and return home to 120 degree fish tank temperature and a bunch of suffocated fish.This device is more sophisticated than the internal thermostat in you heater(s). And I love it.The setup takes getting used to, but once you step through it, the device works- make sure you calibrate it to a trusted thermometer – my unit was spot on, but nevertheless you should check its accuracy and do the calibration step.Now that it’s up and running, the temperature on my tank remains within the calibrated range – so much peace of mind.I STILL CHECK MY TANK EVERY DAY, but so far this controller is leaps and bounds better than the internal thermostats on my tank heaters. And the temperature display on the unit is so easy to read – great for older eyes…
BL –
Awesome controller. Saved my old useless heater!
I really like this heater controller. Like a lot of other fish keepers, Iâve accumulated a lot of old junk aquarium heaters that canât keep the temperature right. I would never trust my prized fish with the old heaters, but this heater controller saves the day and brings new life to my old heaters. I simply max out the temperature on my old heater and plug it into the inkbird heater controller. I drop the temperature probe and heater into the tank, and then set the desired temperature. Thatâs it! Works great and is more accurate than the internal thermostats of most heaters. I use this a lot in my small tanks to stop heaters from cooking my fish. I recommend it.
R. E. –
Tricky set-up, but works great
So if youâre an aquarist like me and tend to stress over what-if scenarios, you probably worry about your heater crapping out and cooking your fish and/or killing them of hypothermia.Aquarium heaters are not invincible and the first thing to break is often their internal thermometerâthe thing that says, âOk, waterâs warm enough! We can stop heating it up more now!âAnd when the thing that tells the heater to stop heating breaks, well…Fish donât do well in hot water. They just donât.I got this thing so I wouldnât have to stress over that so much. It is *not* a heater itself; you enter the settings you want, plug your aquarium heater into this baby, and if the heater itself breaks, the Inkbird keeps it from turning your aquarium into fish soup.I took off a star because it is a bit tricky to set up. The instructions are not the greatest, but once you figure them out, itâs fine. Thereâs an option to set it for different temps at night vs in daytime. If you donât bother with that, it simplifies it quite a bit.Other notes: youâll want to get an old-fashioned thermometer to put in your tank so you can calibrate this thing based on that. My Inkbirdâs temperature sensor was several degrees off. No biggie; thatâs why they built in a way to calibrate it. Just be sure you do, or else it wonât be accurate. Also, if your heater has an adjustable temperature control, youâll still need to set that to the desired temperature as well.
Diego K –
This controller is in a 10 Gallon guppy planted tank, that has a heater with a 3F on/off cycle that it is too much, with this Inkbird controller the on/off cycle is 1F.The installation is very easy, just plug in set the temperature and calibrate with a thermometer and you are good to go! Less than 5 minutes and was already working.It is designed for bigger tanks than mine because it has two plugs for heaters. I will definitively get another when I set a bigger tank.Having this controller also prevents a heater sensor malfunction, this means that the neater wont get stuck in on, overheating my aquarium, or in off making it to cold.
Shane –
These things work great, I bought one to try it out for my 125g aquarium and it worked so good I bought 3 more for all my other aquariums. By far the most useful thing Iâve bought
Nelson R. –
Using for a few days. Works well. Keeps temp steady. I did have to adjust the DB from 2.0 to 0.5 to make the temp steadier. This will make the controller work harder and decrease the longevity of the internal relays. I think it’s worth it for the price.
Ryan –
Look towards competitor products. I bought two of these, and they both exhibit the same symptom: a VERY LOUD buzz that started just after the return window. No response from customer service. Pure trash, do not buy. I wasted my money and can’t keep these plugged in.
Amazon Customer –
Ive had a 306T controlling a pair of aquarium heaters and it worked perfectly for about 18 months, then it began giving high readings from the probe. I contacted the company via amazon and they replaced it with a new one with the new aquarium probe completely free of charge. Ink Bird was great, It was fast and hassle free. The new unit is now operating perfectly. I can highly recommend this product. If you do not have the aquarium probe and it is immersed in water then I recommend applying some silicone around the seam between the metal and rubber.