Review on ThermoPro TP50 Digital Thermometer Temperature by Luis Jacob

Arrived quicker than expected. Set up and given 24 hours to set up. Install it on my home HVAC controller along with a notoriously accurate hydrometer. The hydrometer reading is a little over 10% lower than it should be. The temperature values fluctuated between 3 and 2.5 degrees. Try sending it back only to find out it's non-refundable even though it's Revain Prime. Very upset by the fact that Revain rates it as the best item but then won't let you return it.?