So, just because my rectangular one has been with me for a few years I’m gonna stick up for it a little. It does have 2 sensors in it separated for temp and humidity compared to the circular ones that seem to have the temp sensor baked into the board if it exists at all and the humidity sensor was poorly soldered upside down. But agreed on likely carelessness of assembly from identical parts.

Same batteries and sensor modules it seems and even the press fit nature of them. And the only reason I know that specific one I’m reading against is accurate is because I only kept it because it was the accurate one from a pack of them I grabbed from a lab in college.

I just don’t get why everyone uses them is my point if we are in agreement they kinda suck.