JBL Aqua Thermometer and hygrometer jbl terracontrol

Thermometer for easy control of relative humidity and temperature in Temperature range: -30 to +60 degrees Humidity: 0 to 100% in 10% steps The zone between 20 and 35 is marked as "optimum". Included: 1 thermometer and 1 hygrometer with suction cup and Velcro strap.