Keystone Correction 350 Projector: Flexible Installation Visual Solution for Modern Classrooms

　　In the dynamic environment of modern education, projectors need to adapt to diverse classroom layouts and installation conditions. Our Keystone Correction 350 Projector is engineered with advanced keystone correction technology as the core, combining clear imaging, ultra-quiet operation, and easy deployment. Designed to meet the flexible installation needs of primary and secondary schools, colleges, training institutions, and tutoring centers, it solves the problem of image distortion caused by non-ideal projection angles, ensuring clear and standard rectangular images anytime, anywhere, and enhancing teaching efficiency.

　　1. Product Overview & Core Technical Parameters

　　The Keystone Correction 350 Projector integrates advanced optical technology and user-friendly installation design, featuring 350 ANSI lumens brightness, native high-definition resolution, and precise keystone correction function. Its intelligent correction system allows quick adjustment of distorted images, while the low-noise cooling design and energy-saving performance adapt to long-term teaching use. Below are the detailed technical parameters:

　　Brightness & Resolution: 350 ANSI lumens, native 1280×720P (HD) resolution, support 1080P/4K input; contrast ratio 3000:1 for vivid color reproduction; eye-protective mode (low blue light) to reduce eye strain for long-term viewing by students

　　Display Technology: DLP (Digital Light Processing) technology, LED light source with 30,000-hour service life

　　Low Noise Performance: ≤28dB in standard mode, ≤22dB in eco mode (quiet enough for focused classroom environments, avoiding interference with teaching and learning)

　　Energy Saving: Power consumption ≤65W in standard mode, ≤35W in eco mode; meets Energy Star and CE energy efficiency standards

　　Projection Parameters: Projection size 30-150 inches, throw ratio 1.2:1; support ±15° vertical keystone correction (auto & manual), focus adjustment, and 4:3/16:9/16:10 aspect ratio switching; effectively corrects trapezoidal distortion caused by oblique projection

　　Connectivity Options: 2×HDMI ports (support HDMI 2.0), 1×USB 2.0 port, 1×3.5mm audio jack, Wi-Fi 5 (802.11ac), Bluetooth 5.0 for wireless connection

　　Operating System: Built-in Android 11.0 OS with education-specific optimization; pre-installable teaching apps (e.g., Kahoot!, Google Classroom); support online teaching resources, app download, and wireless screen mirroring (AirPlay/Chromecast) for multi-device content sharing

　　Operating Environment: Working temperature: 0℃ ~ 40℃; storage temperature: -10℃ ~ 60℃; relative humidity: 10% ~ 85%

　　Physical Specifications: Dimensions: 220×165×75mm; weight: 1.2kg; material: ABS flame-retardant plastic

　　Certifications: CE, FCC, RoHS, Energy Star, UL

　　2. Core Advantages: Advanced Keystone Correction & Teaching-Oriented Design

　　2.1 Precise Keystone Correction for Flexible Installation

　　Equipped with ±15° vertical keystone correction (both auto and manual modes), our 350 Projector can quickly correct trapezoidal distortion caused by oblique projection. In complex classroom environments—such as when the projector is placed on a desk at the corner, mounted on a non-central wall, or placed on a mobile cart—the auto keystone correction function can intelligently detect image distortion and complete correction in seconds, without manual adjustment. For special installation scenarios, the manual adjustment mode allows precise fine-tuning to ensure a standard rectangular image. This flexible correction capability eliminates the limitation of fixed installation positions, making it easy to deploy in various classroom layouts and improving the utilization rate of teaching space.

　　2.2 Energy-Saving & Durable Design for Long-Term Teaching Use

　　Adopting a high-efficiency LED light source and intelligent power management technology, the projector significantly reduces power consumption, with ≤35W in eco mode—ideal for all-day teaching use and helping schools reduce electricity costs. The LED light source has a service life of up to 30,000 hours, which means it can be used for 8 hours a day for more than 10 years without replacing the light bulb, minimizing maintenance downtime and operational costs for educational institutions. Additionally, it meets Energy Star and CE energy efficiency standards, aligning with green campus construction requirements.

　　2.3 Clear Imaging with Correction & Eye-Protective Design

　　With 350 ANSI lumens brightness and a 3000:1 contrast ratio, the projector delivers clear and vivid images even in moderately lit classrooms. The keystone correction function ensures that the corrected image maintains high definition and color accuracy without distortion of text, charts, or images—critical for displaying teaching materials such as mathematical formulas, experimental diagrams, and text documents. The built-in eye-protective mode reduces blue light emission, effectively alleviating eye fatigue for students who need to watch the screen for long periods. The DLP technology minimizes color distortion, ensuring that all students in the classroom have a clear and comfortable viewing experience.

　　2.4 Teaching-Oriented Connectivity & Interactive Functions

　　The projector is equipped with rich connectivity options, including 2×HDMI ports, USB port, and wireless connections (Wi-Fi 5, Bluetooth 5.0), enabling seamless connection with teachers' laptops, tablets, smartphones, and U disks storing teaching materials. The built-in Android 11.0 OS supports pre-installation of education-specific apps (e.g., interactive quiz tools, online teaching platforms), allowing teachers to create engaging lessons easily. The wireless screen mirroring function (AirPlay/Chromecast) enables real-time sharing of student homework and group discussion results, fostering interactive teaching and active student participation.

　　2.5 Compact & Portable Design with Flexible Deployment

　　With a compact size of 220×165×75mm and a weight of only 1.2kg, the projector is highly portable for teachers to carry between different classrooms. Combined with the powerful keystone correction function, it can be quickly set up and used in any corner of the classroom without the need for fixed installation or professional debugging. The ABS flame-retardant plastic case is durable and scratch-resistant, adapting to frequent transportation and daily teaching use. Its flexible projection design (30-150 inches projection size) is suitable for various classroom sizes, from small tutoring rooms to medium-sized lecture halls, fully meeting the diverse installation needs of educational scenarios.

　　3. Typical Educational Application Scenarios

　　Our Keystone Correction 350 Projector is widely applicable to various educational scenarios, relying on its flexible installation advantages and stable performance. Typical applications include:

　　Primary & Secondary School Classrooms: Ideal for subject teaching (math, science, art, etc.). The keystone correction function adapts to different classroom layouts, allowing the projector to be placed on desks, carts, or wall corners without image distortion. Clear imaging and eye-protective mode care for students' vision, ensuring effective teaching.

　　Colleges & Universities: Suitable for small lectures, seminar rooms, and lab teaching, facilitating the display of professional course materials, research data, and simulation videos. Wireless screen mirroring supports interactive discussions between teachers and students.

　　Training Institutions & Tutoring Centers: Perfect for skill training, exam preparation, and after-school tutoring. The portable design and keystone correction function enable quick deployment in different training rooms with varying layouts, saving setup time and improving teaching efficiency. Rich connectivity allows quick switching of teaching content.

　　Special Education Classrooms: The clear imaging and low-noise operation adapt to the special needs of special education students, helping teachers deliver personalized teaching content more effectively.

　　Distance Teaching & Online Courses: Compatible with webcams and online teaching platforms, supporting hybrid teaching models. Teachers can easily share on-site teaching content with remote students, ensuring consistent teaching quality.

　　4. Quality Control & Certification

　　We implement strict quality control measures throughout the entire production process of the Keystone Correction 350 Projector. From raw material procurement (LED light source, chips, casing) to product assembly and final testing, every step is subject to rigorous inspection. All projectors pass 100% performance testing, including keystone correction accuracy, brightness, resolution, noise level, and power consumption. The product has obtained multiple international certifications such as CE, FCC, RoHS, Energy Star, and UL, ensuring compliance with global educational equipment standards. We also offer a 3-year product warranty and 7×24-hour technical support, providing reliable after-sales guarantee for educational institutions.

　　5. Customization Services & Pricing

　　To meet the diverse needs of global educational institutions, we provide flexible customization services and competitive pricing policies for the Keystone Correction 350 Projector:

　　Customization Options: Custom logo printing on the casing, pre-installation of region-specific educational apps, personalized packaging design, and customized power plugs (US/EU/UK/AU standards) to adapt to different educational environments.

　　OEM/ODM Services: Provide comprehensive OEM/ODM services, including product design optimization, software customization, and brand labeling, to help customers build their own projector brands.

　　Pricing Policy: Volume-based pricing with preferential quotes for educational institution bulk orders. For the standard Keystone Correction 350 Projector, the unit price is $110-140 for 100-500 units; $95-110 for 500-1000 units; $80-95 for 1000+ units. Contact us for a detailed quotation based on your specific educational project requirements.

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