Renogy R21EF User Manual

The Renogy R21EF is a 21-inch Energy-Efficient LED Monitor with Full HD resolution, built-in power-saving modes, VGA and HDMI inputs, headphone jack, remote control, blue light filter, adjustable stand, and multiple picture presets. Powered by 100-240V AC, 50/60Hz. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Power Management 8. Eye Comfort Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: LED panel with energy-saving technology, Remote Control, HDMI port, VGA INPUT, Headphone jack, Power connector.

Feature	Description
HDMI port	For high-definition video and audio connection
VGA INPUT (PC input) port	For computer video connection
Audio OUT jack	For external speakers or headphones
Headphone jack	For private audio listening
DC input connector	For power adapter connection
Power button	Turns monitor on/off
Menu button	Accesses OSD settings
Auto-adjust	Auto-optimizes display settings for VGA input
Input select	Switches between HDMI and VGA sources
Energy Saver	Reduces power consumption in standby mode

Installation

Unpack and inspect contents. Place on stable surface.

Attach stand: Align stand with monitor base and secure with provided screws.
Connect video sources: Use HDMI for digital devices; VGA for older computers.
Connect audio: Use Audio OUT for external speakers or headphone jack for headphones.
Connect power adapter to monitor and plug into AC outlet.

WARNING! Monitor is fragile; handle with care to avoid screen damage. Ensure all connections are secure.

First-Time Setup

Power on monitor; follow on-screen prompts.

Select input source: Press INPUT button to choose between HDMI and VGA.
Adjust display settings: Use Menu button to access brightness, contrast, and color settings.
Set energy saving mode: In OSD menu, enable Eco Mode for reduced power consumption.
Configure audio: Adjust volume and balance in audio settings menu.

CAUTION! Ensure stable surface; avoid placing in direct sunlight.

Specifications

Screen Size: 21 inches LED.
Resolution: Full HD 1920x1080.
Sound: Built-in speakers with adjustable volume and tone.
Terminals: HDMI, VGA input, headphone, Audio OUT, DC power input.
Power Management: Energy Star certified with multiple power-saving modes.
Supported formats: 1080p, 720p, VGA resolutions.
Power Source: 100-240V AC, 50/60Hz.
Operating Temp: 0°C to 40°C.

Controls and Settings

Access OSD via Menu button. Front Panel: Power, Menu, Auto-adjust, Input select.

Remote: POWER, Menu, Input, Volume, Mute, Preset modes.

Picture: BRIGHTNESS, CONTRAST, COLOR, SHARPNESS, color temperature, aspect ratio. Audio: VOLUME, BALANCE, tone controls. System: Language (ENGLISH default), auto power off, reset to factory defaults. Preset Modes: Standard, Movie, Game, Text.

Connecting Devices

HDMI: For modern devices. VGA: For legacy computers. Audio: Headphone or Audio OUT.

Turn off monitor and devices before connecting.
Match cables to ports (e.g., HDMI to HDMI port).
Select input via INPUT button (HDMI or VGA).

Tip: Use high-quality HDMI cables for best picture quality.

Power Management

Energy-saving features to reduce electricity consumption.

Eco Mode: Reduces brightness to save power.
Auto Power Off: Turns monitor off after specified period of inactivity.
Standby Mode: Low power state when no signal detected.
Power Indicator: LED changes color to indicate power state.

WARNING! Unplug during thunderstorms to prevent power surge damage.

Eye Comfort Features

Blue Light Filter: Reduces blue light emission in OSD menu. Flicker-Free Technology: Minimizes screen flicker for reduced eye strain.

Care & Cleaning

Unplug before cleaning. Use microfiber cloth only; no liquids or abrasive cleaners.

CAUTION! Do not spray liquids directly on screen; avoid ammonia-based cleaners.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Energy Star certified for energy efficiency. Copyright © 2023 Renogy; trademarks of Renogy Corporation. For support, visit www.renogy.com or contact 1-800-330-8678.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power connection	Check power adapter connection; ensure outlet is working.
No display	Input selection/cables	Select correct input source; check cable connections.
Poor picture quality	Settings/cable quality	Run auto-adjust; use higher quality cables.
No sound	Volume/mute settings	Check volume level; ensure mute is off.
Monitor turns off automatically	Power saving settings	Adjust auto power off timer in OSD menu.

Reset: Menu > System > Reset to Factory Defaults.

Service: 1-800-330-8678; www.renogy.com