1. The environment you are using is 2.4*2.4 curtains. How big is it? I calculated that the screen you want is 120 inch, so if you use a projector, you need a machine with higher brightness, such as a machine with 2000 lumens, which is not needed at all.
The machine you want should be able to play videos and slides. Today's machines can be connected to computers, so as to play any clips you want! Only one VGA cable is needed between them!
3. It is the cost, like a machine with 3000 lumens, which is about 6500 yuan. I recommend a machine for you: Hitachi HCP-960X, which is definitely the effect you want most!
Hitachi HCP-960X parameters
Product-oriented educational projector
Display technology LCD
Technical type and specification 0.63 inch polysilicon active matrix liquid crystal display panel ×3 (with micromirror)
Projection mode: orthographic projection/rear projection, desktop/ceiling.
Projection distance (m) 0.9-9
The number of colors supported is16.77 million.
The highest display resolution (DPI) is 1600 * 1200.
Standard display resolution (dpi) 1024*768
Nominal contrast 750: 1
The nominal brightness is 3000 lumens.
Nominal brightness uniformity value 80%
Can I zoom the lens? Yes
The projection screen size is 30-300 inches.
The aspect ratio of the screen is 4: 3/ 16: 9.
Trapezoidal correction automatic vertical trapezium correction
Projection bulb power (watt) 230 UHB
Projection bulb life (hours) 2000
Input signals NTSC, NTSC4.43, PAL, SECAM, M-PAL, N-PAL, HDTV: 750p (720p),1125i (1080i), SDTV: 525p(480p).
Audio-visual performance speaker 7W
Input interface analog RGB: 15 pin micro D-sub terminal× 2, component video: RCA terminal× 3 (y, CB/Pb, Cr/PR), S- video: micro DIN terminal×1,composite video: RCA terminal×1,micro stereo terminal.
Output interface analog RGB: 15-pin micro D-sub terminal×1,micro stereo terminal×1,RS-232, USB.
Safety certification CE/UL/TUV/GS/FCCA
Power supply performance
Noise (dB) (normal mode), 29 (noise reduction mode)
Total Power (Watts) 320
Power Supply Performance AC100-120V/AC 220-240V
Product size 340 * 270 *110mm.
The product weight is 3.5kg.
Accessories included: power cord, instruction manual, RGB cable, video cable, PS/2 mouse cable, safety precautions, remote controller (including battery) and carrying bag.
Other performance: brand-new power-off protection design, high-tech dust-proof function, original anti-theft bar design, advanced security function setting.
If necessary, you can also call me at13266016816, QQ: 5 1328 748 1.