AlertsBeginner

Alert: Unstable Connection

The photoSentinel unit is having intermittent connection drops from the network and can’t successfully complete an upload.

2 minutes readUpdated June 9, 2026

Alert: Unstable Connection

Alert Details

The photoSentinel unit is having intermittent connection drops from the network and can’t successfully complete an upload.

Possible Event Code Triggers

  • Unable to connect to network (232)
  • Missed Photos Error (MEE)
  • Modem Error (MLF)
  • Network dropout on a file send (DRP)
  • Status update error (PRE)
  • Couldn’t register on network (REG)
  • No web connection, reset forced (RSF)
  • Network Dropout (SBO)
  • Webservice Connection Failed (WEB)
  • Network Dropout (CDL)
  • Get config failed (267)
  • Put status failed (268)

You can find the triggering event code and when it occurred by viewing the System Messages on the Status page for this installation. System Messages are indicated with an * next to the Status.

Troubleshooting

Remote Troubleshooting

  • If possible, check the status of another photoSentinel unit on the same project using the same SIM and network settings.
  • Check the SIM card has sufficient data available.
  • Check the SIM card data plan is active on 4G.
  • Check the SIM card doesn’t have limited bandwidth.
  • Check if there is a network dropout from the network provider.
  • There may be congestion during peak hours on the network. Configure the photoSentinel unit to connect and upload at a different time of the day. You can change these settings on your installation’s Capture Config page under the section 'Weekly Schedule' (Tempo and Mach II on APEX firmware) or ‘When to connect’ (Mach II firmware).
  • Check antenna signal strength on your installation’s Status page.
  • Updating to the latest firmware can improve system behaviour. Contact our Support Team to update the firmware remotely. For this, first the photoSentinel unit needs to connect.

On-site Troubleshooting

  • Check the photoSentinel controller is actually turned ON.
  • Check the power input from AC or Solar is connected firmly.
  • Check the battery cable is connected firmly.
  • Check the antenna cable is connected securely. On a Tempo or Mach II using an external antenna, make sure that the controller is seated all the way back in the housing, so it plugs into the antenna socket firmly. Do this by pushing the controller just below the display.
  • Use a SIM card from a different network provider.
  • Configure a custom APN if your network provider requires this. Find the APN for your network provider online.
    • Adding an APN to a Tempo or Mach II: Switch the controller to Setup mode. Use the dial to navigate to 'Set APN' and insert the new custom APN.
  • If you have a Tempo or Mach II with the optional Ethernet cable add-on, connect to an active router.

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