Epson EF-12

The range of alternating current voltage that the product accepts from its power source, expressed in volts (V). It indicates the minimum and maximum supply voltages compatible with the device across different regions.

Indicates the total count of left‑and‑right (L/R) audio output ports available on a product, such as headphone jacks or speaker connectors that provide stereo sound. The value is an integer representing how many separate L/R pairs can be used to connect external audio devices.

Specifies the type of interface or mechanism used to secure a cable in its port, such as Kensington, Noble, IBM, or other standard lock slots. This attribute helps users identify compatibility and security features of the device.

The colour or combination of colours that a product is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the item for consumers.

The amount of visible light emitted by a product, measured in ANSI lumens. This metric indicates the brightness level that users will experience when the device is operating under typical conditions.

The contrast ratio is the proportion between the brightest and darkest luminance a display can produce, expressed as a simple ratio such as 1000:1. It indicates how well a screen can differentiate light from dark areas, affecting image clarity and color depth.

The country where the product was manufactured or its primary geographic source. This attribute indicates the nation responsible for the production or assembly of the item.

The minimum and maximum focal lengths that a camera 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 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 type of illumination used by the product’s display or projection system, such as lamp, LED, laser, or a hybrid combination. It indicates the underlying light‑emitting technology that determines brightness, color accuracy, lifespan and power consumption.

The proportion between the width and height of a screen or image, expressed as two numbers separated by a colon (e.g., 16:9). It indicates whether content is designed for widescreen, square, or other aspect ratios and helps users match devices to their media formats.

The sound intensity produced by a product while operating in its economic or low‑power mode, expressed in decibels (dB). This value indicates how quiet the device is during energy‑saving operation and helps users assess suitability for quiet environments.

The range of relative humidity (in percentage) within which the product is designed to operate reliably. Values are expressed as a minimum–maximum interval such as "20 - 80 %" and indicate the acceptable environmental moisture level for optimal performance.

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 type of electrical supply that powers the device, such as mains electricity, batteries, USB power, or a combination of these options.

The optical method used by a projector to create an image, such as DLP, LCD, LED or 3LCD. It indicates the underlying light‑processing system that determines brightness, color accuracy and overall visual performance.

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.

The pixel dimensions that a projector can output, expressed as width by height (e.g., 1920x1080). It indicates the native resolution of the projected image and is used to determine compatibility with source content and display quality.

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 diagonal measurement ranges of screens that the product can project or display, expressed in millimeters and/or inches. It indicates the minimum and maximum screen sizes that the device is designed to handle.

The total operating hours a light source can provide before it needs replacement, expressed in standard time units such as hours or days.

Indicates whether the product is a smart television that can connect to the internet and run applications or streaming services.

The range of relative humidity (expressed as a percentage) within which the storage device is designed to operate reliably. Values are given as a minimum–maximum interval such as "10 - 90 %" and indicate the acceptable environmental moisture level for optimal performance.

The range of temperatures in which a device can safely operate without risk of damage or performance degradation. Values are expressed in degrees Celsius (°C) and may represent a single temperature, a minimum–maximum interval, or an average operating point.

The proportion between the distance from a projector to its screen and the width of the projected image, expressed as a simple ratio such as 2:1 or 1.5:1. It indicates how far the projector must be placed to achieve a desired screen size and is useful for planning installation space.

The range of vertical scan frequencies that a display device can support, expressed in hertz (Hz). It indicates the minimum and maximum refresh rates at which the screen updates vertically, affecting visual smoothness and stability.

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.

The proportion between the distance from a projector to its screen and the width of the projected image, expressed as a simple ratio such as 2:1 or 1.5:1. It indicates how far the projector must be placed to achieve a desired screen size and is useful for planning installation space.