Current version and operating state of the system. System:

Identified chip family. Chip family:

Connection to the MQTT broker is currently established and technical MQTT messages are being sent.

Out-bound MQTT technical topics:
Online:
N/A (broker connection missing)
RSSI:
N/A (broker connection missing)
IP:
N/A (broker connection missing) learn more... MQTT Conn.:

Time elapsed since last system boot. Generally low times indicate unstable system or power supply. System Up:

Time elapsed since last handshake with Wi-Fi router and the router's received signal strength (RSSI). Consistently low times and low RSSI (<-70dBm) indicate weak connection. Wi-Fi Up:

Time elapsed since last handshake with MQTT broker. Generally low times indicate unstable connection with the broker. MQTT Up:

Time elapsed since the last refresh of the real-time clock. RTC Up:

Currently available free heap. Values below 5000 may indicate an issue. RAM: