... 3 auto memory last RH setting 4 LED display control 5 noiseless cabinet humidor (we are manufacturer)1. the new-style ... can be restored in 6minutes)5.application:firearms,ammuntion,precision control equipment,medicine,industrial heavy iron ,seed and so on ... 2.energy saving and quiet3.sample order Principle of operationRH Control: Set controller (Adjustable)RH Display: Digital LED display for ...