Resolution: 1umol/m2.s Unit:umol/m2.s is photosynthesis rate, 1mW/cm2=46umol/m2.s Error range:±(10%R+2dgt) R: reading (detecting a composite light source that approximates the sunlight spectrum) The reading error will increase under incandescent lamp or monochromatic yellow light. Display:3-3/4 LCD display, maximum displayed numerical value 3999, over load “OL” Drift: ≦±2% /year Linearity:±2% Measuring range: 0-2700umol/m2.s(400-700nm) Wavelength range:400nm-700nm( fit photosynthetic effective function) Sampling time: 2.5 times/s Operation temperature and humidity: 0°C to 40°C <80%RH Storage temperature and humidity: -10°C to 50°C <70%RH Dimensions and weight: 132(L) 60(W) 38(H)mm, approx. 150g Power: 6F22 alkaline 9V battery Battery operation life: Approx. 100 hours |