Ritmix RAT-311

Blowing: with mouthpiece; Sensor: semiconductor; Measuring range (‰): 0 – 1.9; Max. error (‰): 0.1; Warm-up time (s): 10; Blow time (s): 4; Test time (s): 10; Automatic shutdown; Display backlight; Power source: 2xAAA; Operating temperature (°C): 5 °C ~ +40; Size (mm): 115x67x24;