Epson EB-2250U Projector

The minimum and maximum focal lengths that a lens or optical system can cover, expressed in millimetres (mm). It indicates the zoom capability of the device and helps users understand the field‑of‑view range available.

The measurement of a display’s diagonal, expressed in inches or centimeters. It indicates the overall visual area available for content and is commonly used to compare monitors, televisions, laptops, tablets, and other electronic devices.

The horizontal keystone correction angle specifies the range of degrees by which a projector or screen can adjust horizontally to correct image distortion without loss of clarity. It is expressed as a minimum‑maximum value, such as –30° to +30°, and applies to any device that supports keystone adjustment.

The main illumination source used by the product, such as LED, laser, CCFL, or other light-emitting technologies. It indicates whether the device uses a single light source or multiple sources and helps users understand the lighting characteristics of the item.

The linear dimension of a pallet measured in a standard unit such as meters, centimeters or inches. It represents the overall length from one end to the other and is used to compare the size of pallets across different products and logistics contexts.

The horizontal measurement of a pallet, expressed in a linear unit such as millimetres or inches. It indicates how wide the pallet is from one side to the other and helps customers assess fit for storage, shipping, or display.

The electrical power drawn by a device while operating in its economy or energy‑saving mode, expressed in watts (W). This value indicates the typical energy usage when the product is set to reduce consumption during normal operation.

The amount of light emitted by a projector when operating in its low‑power or energy‑saving mode, expressed in lumens (cd/m² for luminance). This value indicates how bright the screen will appear under typical viewing conditions while conserving energy.

Indicates whether a remote control is supplied with the product. A value of "Yes" means a remote is included, while "No" indicates that no remote control is provided and the user must obtain one separately.

The type of serial communication interface supported by the product, such as RS‑232, RS‑485, RJ‑45, or SATA. It indicates which physical connectors and protocols are available for data exchange with other devices.

The total operating hours a projector lamp can provide before it needs replacement, expressed in units of time such as hours or days.

The total operating hours a lamp can provide before it needs replacement when running in an energy‑saving mode, expressed in units of time such as hours or days.

The electrical power output of each built‑in speaker in the product, expressed as a pair of values (e.g., "2 x 10 W" meaning two speakers each rated at 10 W). This attribute helps users compare audio performance and understand the power capacity of integrated speakers.

The chemical composition of a battery that determines its performance, energy density, and suitability for different applications. Common chemistries include Lithium‑Ion, Nickel‑Metal Hydride, Alkaline, Lead‑Acid, and others.

A list of the colour and lighting modes that a projector or display can produce, such as "Blackboard", "Cinema", "Dynamic", "Presentation" or "sRGB". Each value represents a distinct visual setting that the device can switch to for different viewing environments.