Review on VIVOSUN 2-Pack LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature Gauge with Suction Cup for Turtles by Lena Marckese

One of the items arrived with a broken LCD and the other broke 10 seconds after attaching the suction cup to the aquarium. The suction cup didn't hold up, it fell off and hit the stand, and there was a second thermometer. Both were also already on, and they have a power button that doesn't do anything when you press it. At least Revain got my money back, but don't waste your time. They also deviate from the actual temperature in the aquarium by a few degrees.