Testo 477 Handheld LED Stroboscope

- Brand: Testo
- Model: 477
- Type: Handheld LED Stroboscope
- Technical Specifications:
  - Flash Frequency Range: 30 – 300,000 fpm (flashes per minute) = 0.5 – 5,000 Hz
  - Flash Intensity: 4800 Lux at 30 cm distance
  - Flash Duration: Adjustable 
  - Light Source: High-power LED (white)
  - Accuracy: ±0.02 % of MV
  - Resolution: 0.1 - 1 fpm
  - Trigger Input: External trigger input (0–5 V TTL)
  - Trigger Output: 0–5 V TTL
  - Display: Backlit LCD
  - Power Supply: Rechargeable Li-Ion battery 
  - Operating Temperature: 0°C to +45°C
  - Protection Rating: IP65 
  - Housing: Rugged ABS with rubber protection holster
  - Features: Phase shift, slow-motion function, freeze image, measurement of rotational speed without reflective mark (in reflective mode), long-life LED (no lamp replacement), very bright for large observation distances
  - Dimensions: 260 x 210 x 70 mm
- Weight: 1 kg
- Country of Origin: Germany
- HS Code: 902920