| Temperature / input / output slots |
4 / 4 / 4 |
| Metric name length |
24 characters |
| Label length |
temperature 12, inputs and outputs 11, location 20 |
| Telemetry interval |
5 seconds – 1 hour (default 10 seconds) |
| Minimum gap between sends |
2 seconds |
alarm_delay_s |
0 – 3600 seconds |
| Number of rules |
12 |
rules message size |
3500 B |
| Conditions per rule / actions per phase |
4 / 4 |
Rule id length |
12 characters |
| Expressions |
48 characters, 12 nodes, parenthesis depth 4 |
| Flags |
4 |
| Distinct source metric names per rules set |
32 |
| Modbus sources |
40 |
| Source metrics |
400 |
| Registers per source / per profile |
16 |
sources message size |
6144 B |
| Custom telemetry groups |
24 |
tgroups message size |
4096 B |
| Telemetry message size |
12,086 B |
| Size of one history sample |
10,238 B |
| Node history buffer (direct mode) |
0 – 6144 KiB (hist_kb) |
confirm_s |
30 – 3600 seconds |
mqtt_ca |
3000 characters |
| One USB serial line |
4096 characters |
| Web session |
1 session; 10 minutes without activity |
| Web password |
6 – 64 ASCII characters |
| Firmware size |
max. 6.25 MiB (OTA slot) |
| Mosquitto queue per client (gateway) |
1,000,000 messages and 1 GiB |
| Gateway history |
4 GiB and 3 days (default, adjustable) |
