Reducing RUTX50 power draw

NETWORKING SOLUTIONS
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I have a RUTX50 in a remote location, fed via the PoE LAN1 port, together with ESP32 based telemetry via WiFi. Both run on Lithium 12V battery, with a power draw higher than the solar panels deliver in these winter months. I have 2 scenarios to let the batteries survive this winter:

  1. Active state with minimum power consumption: in this state the ESP still sends (low bandwidth) telemetry over a Wireguard VPN tunnel using the 5G modem. It needs active WiFi 2.4g to keep the ESP32 connected;
  2. Sleep state: in this state I do not expect telemetry to arrive, so all can be off, though I need to get to active state again to activate telemetry for a short period (via SMS?).

My current active state has all LAN ports off, WiFi at 20% and only 2.4G active. Powerdraw is still at 620mA. What else can I do to reduce the RUTX50 powerdraw? E.G. use the modem at 3G, utilise sleep states on the CPU, cut down on services… Happy to learn about suggestions

Then the sleep state: Presumably SMS commands only work when the RUTX is fully active. Are there any SMS commands that make it hibernate and wake again?

Suggestions welcome!!
Paul

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