Sensors and outside services

Open Devices › Sensors and choose + Website sensor…, + DNS sensor…, + TCP port sensor…, + Ping sensor… or + Other sensor…. Test checks it once before you save, and Also watch the TLS certificate's expiry adds a website's certificate in the same step.

• Thresholds: warn/down above or below a value, for example ping above 200 ms or toner below 10%.
• Failures in a row before down rides out a single dropped packet.
• Dependencies: devices at a remote site depend on that site's router or firewall automatically, so their alerts are held back while it is down. For anything else, set depends_on on the sensor in config.json.
• Pause, resume, archive or delete in bulk. Every change is live and the previous configuration is backed up.