Monnit Edge - 03 iMonnit Edge

iMonnit-Edge — the Flow sensor source

iMonnit-Edge is the node that brings live gateway sensor reports into Node-RED. Everything downstream (filter, BACnet, Modbus, MQTT, http request) starts from this message shape.

1. Before this node can do anything

Sensors must already be paired and Online in the Edge Gateway web UI → Sensors:

1. Add Device with Device ID + Security Code from the sensor label
2. Confirm the row shows Online and a recent reading
3. Only then expect messages in Flows

Flows cannot pair sensors. See tab 02 Path for the Edge UI walkthrough.

2. Add and configure iMonnit-Edge

1. Palette search iMonnit (or Edge) → drag iMonnit-Edge onto the canvas
2. Double-click it — on a real Edge Gateway, leave defaults (it listens to sensors the gateway already knows)
3. Wire the right output → Debug / filter / BACnet / Modbus / MQTT / http request
4. Done → Deploy
5. Node status should not be a red error ring

Lab stand-in on this tab

The green Monnit - Edge - Sensor Simulator emits the same JSON shape as iMonnit-Edge so you can practice without a radio. On a production Edge, replace it with the real iMonnit-Edge node.

3. What leaves the right port (one msg per report)

Each sensor report is one Node-RED msg :

Example msg  (temperature sensor id 1234)

{
  "topic": "1234",
  "payload": {
    "sensorId": 1234,
    "name": "Temperature - 1234",
    "applicationId": 2,
    "state": 0,
    "date": "2026-09-22 12:00:00",
    "readings": [
      { "description": "Temperature", "data": "22.5" }
    ],
    "batteryPercent": 98,
    "signalPercent": 85,
    "voltage": 3.05
  },
  "timestamp": 1727013600000
}

Payload fields to know

Multi-channel example (humidity family) — readings  may look like:

"readings": [
  { "description": "Humidity", "data": "45.2" },
  { "description": "Temperature", "data": "22.1" },
  { "description": "DewPoint", "data": "9.8" }
]

BACnet / Modbus nodes create one point per reading channel (plus optional battery/signal extras).

4. See it live (do this now)

1. Deploy this tab — the simulator should start ticking
2. Open the right sidebar → Debug (bug icon)
3. Expand a message from Live messages — find payload.sensorId  and payload.readings
4. Or click inject sample JSON below to fire one canned temperature message
5. For a fuller Debug walkthrough, open tab 04 See data

No messages?

• Deploy again; Debug filter = current flow / all nodes
• Simulator or iMonnit-Edge showing an error status?
• On a real Edge: Sensors page still Online with a recent reading?
• Wired to the right output of iMonnit-Edge?

5. Next steps