| Items | Parameter |
| Perspective box body dimension | 50cmx50cmx100cm |
| Hole dimension | 50cmx50cm |
| Cover opening of rear band dimension | 25cmx25cm |
| Height of projection lamp holder | 50-200cm adjustable |
| Transparent light illumination adjustment range | 0-10000lx |
| Handheld photoelectric illumination measuring range | 0.0-200000lx(Divided into four ranges) |
| Handheld photoelectric illumination display accuracy | 0.1lx,Accuracy±3%RD,±0.5%FS;Repeatability:±2% |
| Photoreceptor | Photodiode with filter lens |