We chose this product because it appears on the smallest and most inconspicuous compared to 2 individual measuring instruments, which are still colorful. So we are very pleased with the look. The suction cup works impeccably, also here gets the full credit Trixie. The indicated measured values, however, we are not quite sure if the always agree. Compared with other equipment in our apartment we have moisture variations of the two hygrometers of partially 10%. But what's wrong now? The Trixie sucks in our new terrarium and is quite susceptible and quickly to open doors and changing light conditions. Because of the uncertainty surrounding the details of the humidity we evaluate here only with 4 stars. The room temperature was consistent with another device. All in all we are very satisfied with the equipment, price and performance are absolutely in agreement.