If an Ethernet cable (not supplied) is used, it should be of a shielded type (CAT 6 or greater) This unit contains a CR2032 coin cell battery. CAUTION: Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to the instructions. The ambient operating temperature range of this equipment is 0 °C to 50 °C. Your VeeaHub should be placed or mounted on a flat surface. The unit and mounting bracket should not be obstructed.