# Edge Device Hardware Requirements

**Target Platform**: Raspberry Pi 5 + Cellular HAT

## Must-Have Features

- Raspberry Pi 5 (or equivalent)
- Cellular connectivity (eSIM preferred for remote provisioning)
- Ability to run a local hotspot during initial setup
- Support for camera input (for analog gauge reading)
- Low power consumption for always-on operation
- Tamper-evident enclosure design
- Easy access hatch for SIM/eSIM without opening main enclosure

## Recommended Sensors (MVP)

- Pressure sensors
- Current / amp sensors (inductive)
- Flow meters (pulse or analog)
- Tank level sensors
- Camera for analog dial/needle gauges (optional but supported)

## Constraints

- Must work in locations with no reliable Wi-Fi
- Must minimize cellular data usage
- Must support reliable local processing even during internet outages

**Related**: See `architecture/overview.md` and `pumphouse-use-cases.md`.