21-Key IR Infrared Remote Control – NEC Protocol for Arduino & Media Players

21-Key IR Infrared Remote Control

A compact and versatile 21-button infrared remote control using the NEC protocol — the most widely supported IR standard in Arduino, Raspberry Pi, and DIY electronics projects. With dedicated media control buttons (Power, Stop, EQ, Mode, Play/Pause, Skip, Volume) and a full numeric keypad (0–9), this remote is perfect for controlling IR receivers, media players, LED strips, and custom embedded systems.

Key Features

• 21 buttons total: media controls + numeric keypad (0–9)
• Protocol: NEC (38kHz carrier frequency)
• Colored buttons: Red (Power, Mute), Green (EQ, Mode), Blue (media controls)
• Numeric keys: 0–9 (white)
• Functions: Power, Stop, EQ, Mode, Play/Pause, Next, Prev, Vol+, Vol−, 0–9
• Compact slim black ABS body
• Battery: CR2025 / CR2032 coin cell (included or compatible)
• Transmission distance: up to 8 meters

Specifications

• Protocol: NEC IR (38kHz)
• Buttons: 21
• Carrier Frequency: 38kHz
• Range: Up to 8m (line of sight)
• Battery: CR2025 coin cell
• Dimensions: ~86 × 40 × 6mm

Applications

• Arduino IR receiver projects (with VS1838B / TSOP1738)
• Raspberry Pi media center control
• DIY LED strip controller
• Custom home automation remote
• MP3 / audio player control