This product is manufactered by Plas Labs Inc. under the product number 890-THC/DT/EXP/EU. This product includes a factory installed drying train system. If the Rh rises above the set point the drying train system will turn on until the Rh drops to the set point. The humidity range control accuracy is ± 3% Rh.
For more technical information , please view the manufacture website: https://plas-labs.com/products/glove-boxes/890-series