Hi,
For those who keep aquarium fish. I recently spotted this deal. It was $56.09 and there is a vouchers for another 10% off on amazon and this bring it to a total of $50.73. I think it is the cheapest for this device in a while. Below is the spec from amazon direct -
[Dual Relays for Prevent Overheating] ➥The aquarium temperature controller is equipped with 2 relays to ensure that the power can be turned off under any circumstances, this will protect your fish from being hurt by overheated water.
[Two Temperature Probes Protection for Preventing Probe Malfunction] ➥The dual probe aquarium temperature controller will alarm if the temperature difference between 2 probes is bigger than 3℃/5℉, and the app will push a notification at the same time. Your fish might be in danger as it is hard to know the probe is broken immediately if the temperature controller has only 1 probe.
[Exceptions ALARM APP Notification] ➥Pair the aquarium temperature controller with your phone via 2.4GHz Wi-Fi, the device will alarm if there are exceptions. And all exceptions will be updated to the APP, the app will push notifications to remind you.
[Continuous Heating ALARM] ➥The heating time can be set according to your needs from 1 hour to 72 hours, the controller will alarm if water can not be heated to the setting temperature within the specified time. The temperature setting range is 20.0℃~35.0℃/68.0℉~95.0℉ and the detectable temperature range is -40℃~100℃/-40℉~212℉.
[2400W Plug and Play Design] ➥The 2400w high-power aquarium temperature controller is compatible with most kinds of heaters, you don’t need to assemble the product yourself, just plug and play.
Technical Parameters:
Voltage: 220~240Vac 50/60Hz
Current: 10A Max
Wattage: 2200W(220Vac)/2400W(240Vac)
Type of temperature probe: R25℃=10KΩ±1%; R0℃=26.74~27.83KΩ;B25/85℃=3435K±1%
Temperature control range: 20.0℃~35.0℃/68.0℉~95.0℉
Temperature measurement range: -40.0℃~100℃/-40.0℉~212℉
Temperature display accuracy: 0.1℃/℉(<100℃/℉), 1℃/℉(>=100℃/℉)
Display unit: Celsius ℃ or Fahrenheit ℉
Ambient temperature: -20℃~40℃/-4.0℉~104℉S
torage environment: Temperature: 0℃~60℃/32℉~140℉;Humidity: 20~80%RH (Unfrozen or condensation state)
Cant comment on the use of this specifically but I used a similar Inkbird product for my homebrew setup and it worked brilliantly.