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Temperature sensor

Ezurio Sentrius RS26x Ext RTD LoRaWAN decoder and payload format

The Ezurio Sentrius RS26x Ext RTD is a LoRaWAN temperature sensor that reports temperature. It is rated IP67, it runs on a replaceable CR123A battery and it works from -25 to 85 °C.

Payload format

An uplink from the device as it arrives at the network server, and what the official decoder returns for it. Examples come from the decoder's own test cases.

Example 1 · fPort 1

Payload (hex)

00 C0 03 FF 7E 33 34 04 68 7E 48 B6 01 F4 19 99 04 68 7E 48 D4 01 90 00 00 04 68 7E 48 F2 01 2B E6 66 04 68 7E 49 10 00 C7 CC CC 04 68 7E 49 2E 00 63 B3 33 04 68 7E 49 4C FF FF 99 9A 04 68 7E 49 6A FF 9B 80 00 04 68 7E 49 88 FF 37 66 67 04 68 7E 49 A6 FE D3 4C CD 04 68 7E 49 C4 FE 6F 33 34

Decoded (JSON)

{
  "Battery Status": "Good",
  "Device Status": {
    "Backlog Wraparound": "No",
    "Backlogs Available": "No",
    "Bandwidth Limitation": "No",
    "Sensor Fault": "No",
    "Unsupported API Version": "No"
  },
  "Temperature": -129.8,
  "Temperature Backlog 1": {
    "Temperature": 500.1,
    "Timestamp": "Mon, 21 Jul 2025 14:03:34 GMT"
  },
  "Temperature Backlog 2": {
    "Temperature": 400,
    "Timestamp": "Mon, 21 Jul 2025 14:04:04 GMT"
  },
  "Temperature Backlog 3": {
    "Temperature": 299.9,
    "Timestamp": "Mon, 21 Jul 2025 14:04:34 GMT"
  },
  "Temperature Backlog 4": {
    "Temperature": 199.8,
    "Timestamp": "Mon, 21 Jul 2025 14:05:04 GMT"
  },
  "Temperature Backlog 5": {
    "Temperature": 99.7,
    "Timestamp": "Mon, 21 Jul 2025 14:05:34 GMT"
  },
  "Temperature Backlog 6": {
    "Temperature": -0.4,
    "Timestamp": "Mon, 21 Jul 2025 14:06:04 GMT"
  },
  "Temperature Backlog 7": {
    "Temperature": -100.5,
    "Timestamp": "Mon, 21 Jul 2025 14:06:34 GMT"
  },
  "Temperature Backlog 8": {
    "Temperature": -200.6,
    "Timestamp": "Mon, 21 Jul 2025 14:07:04 GMT"
  },
  "Temperature Backlog 9": {
    "Temperature": -300.7,
    "Timestamp": "Mon, 21 Jul 2025 14:07:34 GMT"
  },
  "Temperature Backlog 10": {
    "Temperature": -400.8,
    "Timestamp": "Mon, 21 Jul 2025 14:08:04 GMT"
  }
}
FieldValue
Battery StatusGood
Device Status.Backlog WraparoundNo
Device Status.Backlogs AvailableNo
Device Status.Bandwidth LimitationNo
Device Status.Sensor FaultNo
Device Status.Unsupported API VersionNo
Temperature-129.8
Temperature Backlog 1.Temperature500.1
Temperature Backlog 1.TimestampMon, 21 Jul 2025 14:03:34 GMT
Temperature Backlog 2.Temperature400
Temperature Backlog 2.TimestampMon, 21 Jul 2025 14:04:04 GMT
Temperature Backlog 3.Temperature299.9
Temperature Backlog 3.TimestampMon, 21 Jul 2025 14:04:34 GMT
Temperature Backlog 4.Temperature199.8
Temperature Backlog 4.TimestampMon, 21 Jul 2025 14:05:04 GMT
Temperature Backlog 5.Temperature99.7
Temperature Backlog 5.TimestampMon, 21 Jul 2025 14:05:34 GMT
Temperature Backlog 6.Temperature-0.4
Temperature Backlog 6.TimestampMon, 21 Jul 2025 14:06:04 GMT
Temperature Backlog 7.Temperature-100.5
Temperature Backlog 7.TimestampMon, 21 Jul 2025 14:06:34 GMT
Temperature Backlog 8.Temperature-200.6
Temperature Backlog 8.TimestampMon, 21 Jul 2025 14:07:04 GMT
Temperature Backlog 9.Temperature-300.7
Temperature Backlog 9.TimestampMon, 21 Jul 2025 14:07:34 GMT
Temperature Backlog 10.Temperature-400.8
Temperature Backlog 10.TimestampMon, 21 Jul 2025 14:08:04 GMT

Example 2 · fPort 1

Payload (hex)

00 C0 04 68 7E 48 B6 01 F4 19 99 04 68 7E 48 D4 01 90 00 00 04 68 7E 48 F2 01 2B E6 66 04 68 7E 49 10 00 C7 CC CC 04 68 7E 49 2E 00 63 B3 33 04 68 7E 49 4C FF FF 99 9A 04 68 7E 49 6A FF 9B 80 00 04 68 7E 49 88 FF 37 66 67 04 68 7E 49 A6 FE D3 4C CD 04 68 7E 49 C4 FE 6F 33 34

Decoded (JSON)

{
  "Battery Status": "Good",
  "Device Status": {
    "Backlog Wraparound": "No",
    "Backlogs Available": "No",
    "Bandwidth Limitation": "No",
    "Sensor Fault": "No",
    "Unsupported API Version": "No"
  },
  "Temperature Backlog 1": {
    "Temperature": 500.1,
    "Timestamp": "Mon, 21 Jul 2025 14:03:34 GMT"
  },
  "Temperature Backlog 2": {
    "Temperature": 400,
    "Timestamp": "Mon, 21 Jul 2025 14:04:04 GMT"
  },
  "Temperature Backlog 3": {
    "Temperature": 299.9,
    "Timestamp": "Mon, 21 Jul 2025 14:04:34 GMT"
  },
  "Temperature Backlog 4": {
    "Temperature": 199.8,
    "Timestamp": "Mon, 21 Jul 2025 14:05:04 GMT"
  },
  "Temperature Backlog 5": {
    "Temperature": 99.7,
    "Timestamp": "Mon, 21 Jul 2025 14:05:34 GMT"
  },
  "Temperature Backlog 6": {
    "Temperature": -0.4,
    "Timestamp": "Mon, 21 Jul 2025 14:06:04 GMT"
  },
  "Temperature Backlog 7": {
    "Temperature": -100.5,
    "Timestamp": "Mon, 21 Jul 2025 14:06:34 GMT"
  },
  "Temperature Backlog 8": {
    "Temperature": -200.6,
    "Timestamp": "Mon, 21 Jul 2025 14:07:04 GMT"
  },
  "Temperature Backlog 9": {
    "Temperature": -300.7,
    "Timestamp": "Mon, 21 Jul 2025 14:07:34 GMT"
  },
  "Temperature Backlog 10": {
    "Temperature": -400.8,
    "Timestamp": "Mon, 21 Jul 2025 14:08:04 GMT"
  }
}
FieldValue
Battery StatusGood
Device Status.Backlog WraparoundNo
Device Status.Backlogs AvailableNo
Device Status.Bandwidth LimitationNo
Device Status.Sensor FaultNo
Device Status.Unsupported API VersionNo
Temperature Backlog 1.Temperature500.1
Temperature Backlog 1.TimestampMon, 21 Jul 2025 14:03:34 GMT
Temperature Backlog 2.Temperature400
Temperature Backlog 2.TimestampMon, 21 Jul 2025 14:04:04 GMT
Temperature Backlog 3.Temperature299.9
Temperature Backlog 3.TimestampMon, 21 Jul 2025 14:04:34 GMT
Temperature Backlog 4.Temperature199.8
Temperature Backlog 4.TimestampMon, 21 Jul 2025 14:05:04 GMT
Temperature Backlog 5.Temperature99.7
Temperature Backlog 5.TimestampMon, 21 Jul 2025 14:05:34 GMT
Temperature Backlog 6.Temperature-0.4
Temperature Backlog 6.TimestampMon, 21 Jul 2025 14:06:04 GMT
Temperature Backlog 7.Temperature-100.5
Temperature Backlog 7.TimestampMon, 21 Jul 2025 14:06:34 GMT
Temperature Backlog 8.Temperature-200.6
Temperature Backlog 8.TimestampMon, 21 Jul 2025 14:07:04 GMT
Temperature Backlog 9.Temperature-300.7
Temperature Backlog 9.TimestampMon, 21 Jul 2025 14:07:34 GMT
Temperature Backlog 10.Temperature-400.8
Temperature Backlog 10.TimestampMon, 21 Jul 2025 14:08:04 GMT

Specifications

Manufacturer
Ezurio
Model
Sentrius RS26x Ext RTD
Type
Temperature sensor
Measures
temperature
Protection
IP67
Battery
CR123A (replaceable)
Operating temperature
-25 … 85 °C
LoRaWAN regions
AS923, AU915-928, EU863-870, US902-928

Connect it to Cloud Studio IoT

  1. 1

    Register the device in your network server

    Add it to The Things Stack, ChirpStack, Actility ThingPark or LORIOT with its DevEUI, JoinEUI and AppKey and the frequency plan of your region.

  2. 2

    Apply the decoder

    In The Things Stack, pick the model from the device repository and its decoder is applied for you. In ChirpStack v4, paste the official decoder as the device profile's JavaScript codec.

  3. 3

    Connect the network server to Cloud Studio IoT

    Set up the integration once per network server; every device registered there then reaches Cloud Studio IoT with its decoded values.

  4. 4

    Build dashboards and alarms

    The decoded fields become device variables for dashboards, alarms by email or SMS, and scheduled reports.

See your Ezurio Sentrius RS26x Ext RTD on a dashboard

Start a free trial, add the device with its DevEUI and get dashboards and alarms from its next uplink.

Talk to us

Frequently asked questions

Device facts and decoder examples: The Things Network Device Repository (Apache-2.0) · commit 7693223, imported 2026-10-05.