SPU20B - Senspuck Pure Battery
The Senzemo Senpuck Pure is an indoor LoRaWAN® air quality sensor that measures CO2, TVOC, temperature, realtive humidity, and pressure. Suitable for monitoring air quality in enterprise and public spaces. The device sends data to the LoRaWAN® network and notifies users to open the windows if the air quality is poor.
About this device
The Senzemo Senpuck Pure is an indoor LoRaWAN® air quality sensor that measures CO2, TVOC, temperature, realtive humidity, and pressure. Suitable for monitoring air quality in enterprise and public spaces. The device sends data to the LoRaWAN® network and notifies users to open the windows if the air quality is poor.
The SPU20B - Senspuck Pure Battery supports 4 regional frequency plans and operates as a Class A LoRaWAN device. A payload codec is published in the repository, so uplinks are decoded automatically when you onboard it to The Things Stack.
Key features
- Sensors: co2, tvoc, temperature, humidity, pressure.
- Payload codec included, uplink decoder ready for one-click activation.
- 4 frequency plans supported: AS923, AU915-928, EU863-870, US902-928.
- Battery powered (ER14505), user replaceable.
Vendor
At a glance
Hardware specifications
| Model ID | spu20b |
| Dimensions | 86 × 86 × 28 mm |
| Weight | 60 g |
| IP rating | IP64 |
| Operating temperature | -20 °C to 70 °C |
| Relative humidity | 0% to 0.95% |
| Power | Battery — ER14505, replaceable |
Sensors & capabilities
Certifications & compliance
| Safety | 62368-1 — IEC |
| Radio equipment | 303 446-1 — ETSI |
| Radio equipment | 303 446-2 — ETSI |
| Radio equipment | 301 489-17 — ETSI |
| Radio equipment | 61000-6-1 — ETSI |
| Radio equipment | 61000-6-2 — IEC |
Standards
Network profiles
Capabilities are defined per firmware version and frequency plan, exactly as published in the repository.
Firmware 1.0
| Frequency plan | MAC | Reg. params | Class | Join | Max EIRP | Certified |
| AS923 | 1.0.3 | RP001-1.0.3-RevA | A | OTAA | 16 dBm | — |
| AU915-928 | 1.0.3 | RP001-1.0.3-RevA | A | OTAA | 22 dBm | — |
| EU863-870 | 1.0.3 | RP001-1.0.3-RevA | A | OTAA | 16 dBm | — |
| US902-928 | 1.0.3 | RP001-1.0.3-RevA | A | OTAA | 22 dBm | — |
Frequency plan coverage
Live decoder playground
Decode any hex payload client-side with the device's published codec, the exact code The Things Stack runs.
// pick an example or paste a payload, then Decode
Example uplink from The Things Stack
The full JSON message your application receives via MQTT or webhook when this device sends the payload above, raw bytes, decoded fields and radio metadata included.
// decode a payload above to see the full envelope
Codec source
// loading codec…
Add to The Things Stack
Manual setup
Create an application
In The Things Stack console, go to Applications → Create application and pick a unique application ID.
Register an end device
Choose From the LoRaWAN Device Repository and search for “SPU20B - Senspuck Pure Battery”. Select your firmware version and frequency plan.
Enter device credentials
Provide the DevEUI, JoinEUI and AppKey printed on the device label or QR code.
Power on & verify uplinks
Within a few minutes you'll see the join request and decoded uplinks in the Live data tab.