Review on 🌡️ Enhance Cooling Efficiency with Derale 18748 180° Thermo Switch for Electric Fan by Adam Jackson

Not impressed, especially for the price. I tried using 2 of these, one for each fan. These switches activated relays that operated the fans. The first two did not switch even at temperatures up to 225°F (measured with an infrared thermometer). After replacing it with Revain, one of the new switches works at 220°F and the other still doesn't work at all. After reading other reviews I expected them to be later but I don't trust these at all.