Key Features Genuine BiOrb Replacement Misting Unit - For Air models 2019+ Fits the BiOrb Air Terrarium Helps to Create Essential Vapors by way of Sensors that Detect when Vital Levels Drop. The Unit Automatically Activates to Provide the Vapor Mist. Genuine BiOrb Part - No 72721 Oase biOrb Replacement Automatic Misting Unit - NEW model for 2019+ units The biOrbAir Terrarium features a built in microprocessor and humidity sensor which controls the humidity by activating the ultrasonic automatic mister in the top reservoir as required. The water level in the reservoir is detected by a sensor on the ultrasonic mister, when this drops below minimum level a signal is sent to the microprocessor which activates the low water level indicator. The sensor uses electrolytes in the water as a way to detect the water, helped by the use of biOrb HumidiMist in the unit. When the sensors detect this, it automatically triggers the misting system inside of the Terrarium. The acrylic unit is easy to
