Fc 51 Ir Sensor Datasheet Hot |link| Jun 2026

| Condition | Cold Start (25°C) | Hot Running (50°C) | | :--- | :--- | :--- | | Detection distance (max) | 30 cm | 18 cm | | False positive rate (no obstacle) | 0% | 30-40% after 20 min | | Output switching frequency | 1 kHz | 400 Hz (sluggish) | | Current draw | 22 mA | 34 mA |

: For advanced uses of IR for heat mapping, researchers often use low-resolution IR arrays (like the AMG8833) to count people based on thermal signatures. fc 51 ir sensor datasheet hot