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| Brand | testo |
|---|---|
| Model | testo 545 |
| Measurement Range | 0.01 to 200,000 lx (typical) |
| Spectral Response | V(λ)-corrected per CIE 1931 standard |
| Accuracy | ±3% ±1 digit (at 25°C, 500 lx, tungsten reference) |
| Operating Temperature | 0 to +50°C |
| Battery | 3 × AA (included) |
| Connectivity | Bluetooth 4.2 LE |
| App Compatibility | testo Smart App (iOS/Android) |
| Compliance | EN 13032-1, DIN 5032-7, ISO/CIE 19476 |
| Brand | testo |
|---|---|
| Model | testo 545 |
| Sensor Type | Silicon Photodiode |
| Measurement Range | 0–100,000 lx |
| Accuracy | ±3% of reading ±1 digit (Class C per DIN 5032-7 / EN 13032-1 Annex B) |
| Resolution | 0.1 lx (<10,000 lx), 1 lx (≥10,000 lx) |
| Operating Temperature | −10 to +50 °C (probe: 0 to +50 °C) |
| IP Rating | IP40 (instrument), IP20 (probe) |
| Battery Life | ~70 h (3 × AA) |
| Weight | 288 g |
| Probe Dimensions | 134 × 54 × 23 mm |
| Main Unit Dimensions | 149 × 60 × 28 mm |
| Cable Length | 1.4 m |
| Compliance | V(λ)-corrected photopic response per CIE 1931 standard, optimized for white and warm-white LEDs (CCT < 5000 K), excluding monochromatic blue LEDs |
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