PS-420

PS-420 PAR Light Payload Decoder

The PS-420 decoder publishes a light / PAR field for greenhouse and grow-room trend charts. Keep the sensing face clean and level with the canopy.

Particlesensing TeamPublished

Install notes

Mount above the canopy with a clear sky view. Dust and condensation on the diffuser will decode as low light.

Do not reuse soil or wind decoders. Light, moisture, and wind are separate profiles on one farm application.

Named fields

FieldTypeNotes
parnumberPAR / light reading in datasheet units
battery_mvintegerBattery millivolts
fcntintegerFrame counter

Example after decode

{
  "par": 420,
  "battery_mv": 3410,
  "fcnt": 63
}

Byte offsets live in the decoder file shipped with the kit. If the first uplink disagrees with this example, trust the shipment file and the factory functional-test record.

Related pages

FAQ

Is this a lab quantum sensor?

It is an industrial LoRaWAN trend instrument. Confirm spectral response on the datasheet for research uses.

Same decoder as soil?

No. Soil moisture/EC uses the PS-410 profile.

Interval?

Follow the datasheet. Faster uplinks shorten battery life.

Agriculture overview?

See the agriculture solution page for how soil, light, wind, and rain share one gateway.