What do RSSI, SNR and noise floor mean?

RSSI estimates received signal power; SNR compares signal with noise; noise floor reflects background energy. Stronger signal and adequate SNR generally reduce retries, but thresholds are device/use dependent.

What to check

RSSI/SNR/noise over time; retries; modulation.

When to get help from a person

RF specialist for anomalous readings.

Show the technical detail
On a managed Wi-Fi plan

Use platform values comparatively by client/location; avoid a single universal pass/fail threshold.

On another provider's router

Other ISP apps may expose only bars.

What to be careful of

Do not present vendor-specific RSSI scales as universal.

Where this comes from: Official · see the original source ↗ · Draft—technical review · checked 17 August 2026

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