GRAIN MOISTURE METER MODEL YLS-A Chlorophyll Meter -  Measuring interval: minimum acuities 2 seconds -  Measuring scope: 0.0-99.9 SPAD -  Measurement sample: all kinds of plant leaves -  The measurement area: 10mm -  Measurement methods: two wavelength optical concentration sent way -  Feeling should implement: silicon semiconductor photoelectric diode -  Showing the way: measured values ( 3 digits liquid crystal display) , measuring frequency (2 digits display)  -  Measuring interval: minimum acuities 2 seconds -  Measuring scope: 0.0-99.9 SPAD -  Fine degrees: + 1.0 SPAD ( room temperature, SPAD value between 0-50)  -  Heavy after sex: + 0.3 SPAD unit SPAD value between 0 within ( 50) - -  Heavy now sex: + 0.5 SPAD unit SPAD value between 0 within ( 50) - -  The operating temperature: 0 ~ 50 ° C -  Storage temperature: - 20 ~ ~ 55 ° C -  Memory capacity: 30 data, automatic are calculated and displayed average -  Electricity source: 2 AA alkaline section 5 mn batteries or carbon - zinc batteries -  Battery life: each group two batteries can last more than 20, 000 times operation -  Body product 42mm 155mm 70mm * * : ( long x width x high)  -  Heavy quantity: 320 grams ( not including battery)