Warranty: one year Certification: without Customized support: OEM, ODM Place of Origin: China Brand Name: OEM Model Number: ME-722N Size: 65*52*40cm Weight: 19Kg Focal Length: 325-1000nm Wavelength Range: 325-1000nm, 325-1000nm Wavelength Accuracy: 4nm, RS232 Spectrum Bandwidth: 2.0nm Power: AC220v 22v,50Hz 1Hz, 80W Focal length: 160mm Grating: 1200 lines/mm Detector: Silicon Photocell Photometric Range: 0.0 ~ 100.0% T; 0 ~ 1.999A;0 ~ 1999C Monochromator type: Littrow Photometry: Single beam