# Hardware

- [MODULAIR](/hardware/modulair.md)
- [MODULAIR (pre-2025)dhh](/hardware/modulair/modulair.md): This page documents the QuantAQ MODULAIR air quality sensor.
- [MODULAIR](/hardware/modulair/modulair-x.md): Product manual for the 2025 generation of MODULAIR (i.e., MODULAIR-X).
- [MODULAIR-PM](/hardware/modulair-pm.md): Product manual for the MODULAIR-PM.
- [Solar Power System](/hardware/solar-power-system.md)
- [Solar Power System (pre-2025)](/hardware/solar-power-system/solar-power-system-pre-2025.md): Product manual for the MODULAIR Solar Power System (pre-2025).
- [Smart Solar Power System](/hardware/solar-power-system/smart-solar-power-system.md): This page includes the Smart Solar Power System operating manual.
- [Weather Station](/hardware/weather-station.md)
- [Gill MaxiMet Weather Station](/hardware/weather-station/gill-maximet-weather-station.md): This page includes the operating manual for the Gill MaxiMet GMX200 and GMX500 weather stations.
- [MODULAIR-UFP](/hardware/modulair-ufp.md): Product manual for the MODULAIR-UFP ultrafine particle monitor.