My Wiengard gateway is on all the time. No real need to turn if off unless I was unplugged or the solar was inactive. It's no different then a router in your home. If you're worried about a battery drain, shut off the battery disconnect.
__________________
Tony & Donna
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide