Acer Projector รุ่น X1228i (4500 ANSI Lumens XGA)

ACER X1228i (4,500 lm / XGA / Wireless) Wireless ความสว่าง(ANSI Lumens) 4,500 ความละเอียด(พิกเซล) 1024x768 (XGA) Contrast 20,000:1 1 VGA Input 1 HDMI Input Auto Keystone / Auto Ceiling รับประกันตัวเครื่อง 3 ปี Onsite pick up หลอดภาพ 1 ปีหรือ 1,000 ชม. Images Native resolution 1024 x 768 Maximum resolution 1920 x 1200 Brightness (standard mode) 4500 lm Native aspect ratio 4: 3 Compatible aspect ratio 16: 9 Contrast ratio 20,000: 1 Image width / projection distance ratio 1.94 to 2.16 (1295.40 mm @ 2000 mm) Digital zoom 2x Vertical keystone correction -40 ° / + 40 ° Maximum vertical frequency 120 Hz Maximum horizontal frequency 100 kHz Minimal vertical synchronization 24 Hz Minimal horizontal synchronization 15 kHz Supported colors 1.07 billion colors (30 bits) Projection lens Smallest aperture F / 2.41 Largest aperture F / 2.53 Minimum focal length 21.85 mm Maximum focal length 24.01 mm Minimum diagonal image size 584.20 mm Maximum diagonal image size 7.62 m (300 in.) Minimum projection distance 1 m Maximum projection distance 11.80 m Optical zoom 1.1x Lamp Number of lamps 1 Lamp power 220 W Operating hours lamp (normal mode) 6000 hour (s) Operating hours lamp (energy saving mode) 10000 hour (s) ExtremeEco mode lamp life 15000 hour (s) Interfaces / connections USB Yes Composite video Yes Number of VGA inputs 1 VGA input Yes Number of audio inputs 1 Number of audio outputs 1 Audio line-in Yes Audio line out Yes Technical information Projection system DLP Projection method Ceiling Ceiling back back front Video compatibility EDTV HDTV NTSC PAL SDTV SECAM Computer compatibility Mac PC Windows PC Audio Number of speakers 1 Speaker output power 3 W Sound system Mono Network / communication Wireless functionality EZCast Miracast Wi-Fi