Compass 01901

Blowing: no mouthpiece; Sensor: semiconductor; Measuring range (‰): 0 – 2; Max. error (‰): 0.01; Warm-up time (s): 10; Blow time (s): 5; Test time (s): 20; Upper limit; Anti-deception; Automatic shutdown; Power source: 2xAAA; Operating temperature (°C): -5 °C ~ +45;