UL Requirements
When the devices are operated under UL conditions, the following additional requirements must be met:
Supply voltages
The devices are not intended to be directly connected to the supply mains, but are instead intended to be supplied via UL listed power supply in accordance with UL 508 or UL 61010‑2‑201, providing galvanic isolation from mains.
The user must ensure that no more than 26 A per US/UP flows through the X70 and X71 connectors.
Networks
The devices may not be connected to telecommunication networks.
Ambient temperature
The devices may only be operated within an ambient temperature range of -25 °C to +55 °C.