The proportion of electronic balance functions: 
 Automatic calibration with external weights; 
 RS-232C interface, DATA I / O interface; 
 Built-in Windows pass-through window; 
 The analog display graphics; said suspension hook under measurement; 
 Weighing capacity: 120g ---- 220g 
 Minimum display value: 0.1mg 
 The standard deviation σ: ≤ 0.1mg 
 Linearity: ± 0.2mg 
 Response time: 3s 
 Calibration weight: N / A 
 Ambient temperature: 5 ~ 40 ° C 
 Sensitivity temperature coefficient (10 ~ 30 ° C): ± 2ppm / ℃ 
 Pan size: a diameter of about 80mm 
 The main dimensions: about 220mmW × 330mmD × 310mmH 
 Power Requirements: about 7VA