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Yayusi S2 User Manual [updated] Jun 2026
| Icon | Meaning | |------|---------| | 💡 Solid light | Active measurement | | 🔄 Flashing | Pairing or syncing | | 🔴 Red | Low battery or error | | ✔️ Checkmark | Measurement successful |
Long press the Power/Play/Pause button for 3 seconds. Pairing:
Outdated firmware is a leading cause of “Yayusi S2 not responding.” New updates fix bugs and add features.
| Icon | Meaning | |------|---------| | 💡 Solid light | Active measurement | | 🔄 Flashing | Pairing or syncing | | 🔴 Red | Low battery or error | | ✔️ Checkmark | Measurement successful |
Long press the Power/Play/Pause button for 3 seconds. Pairing:
Outdated firmware is a leading cause of “Yayusi S2 not responding.” New updates fix bugs and add features.
