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Parking sensor

Nwave NPS405SM LoRaWAN decoder and payload format

The Nwave NPS405SM is a LoRaWAN parking sensor that reports vehicle detection, temperature and proximity. It is rated IP68, it runs on a replaceable AA 10,800mAh Li-SOCI2 battery and it works from -40 to 85 °C.

Nwave NPS405SM
Official decoderProduct page

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 2

Payload (hex)

00 D3 D8 00 59 0B

Decoded (JSON)

{
  "type": "heartbeat",
  "occupied": false,
  "battery_voltage": 3.344,
  "temperature": -10,
  "battery_health": "normal",
  "hw_health_status": 0
}
FieldValue
typeheartbeat
occupiedfalse
battery_voltage3.344
temperature-10
battery_healthnormal
hw_health_status0

Example 2 · fPort 10

Payload (hex)

D1 1F 34 56 78

Decoded (JSON)

{
  "type": "user_registration",
  "occupied": true,
  "previous_state_duration": 160,
  "previous_state_duration_error": 4,
  "previous_state_duration_overflow": false,
  "tag_id": "1F345678"
}
FieldValue
typeuser_registration
occupiedtrue
previous_state_duration160
previous_state_duration_error4
previous_state_duration_overflowfalse
tag_id1F345678

Specifications

Manufacturer
Nwave
Model
NPS405SM
Type
Parking sensor
Measures
vehicle detection, temperature, proximity
Protection
IP68
Battery
AA 10,800mAh Li-SOCI2 (replaceable)
Operating temperature
-40 … 85 °C
LoRaWAN regions
EU863-870, US902-928, AU915-928

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 Nwave NPS405SM 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.