Description
21 keys IR Remote Control without Battery (Random Designs)
The 21 Keys IR Remote Control is a compact infrared remote designed for DIY electronics, Arduino projects, home automation, and other microcontroller-based applications. It uses a 38kHz carrier frequency, making it compatible with commonly used TSOP38238 IR receiver modules.
With 21 buttons, the remote provides multiple control inputs for triggering different functions in electronic projects. It can be used to control LEDs, motors, relays, displays, media functions, and other compatible circuits through an IR receiver and microcontroller. The remote offers a control distance of more than 8 meters, depending on environmental conditions, receiver sensitivity, battery condition, and line of sight. It is suitable for projects where convenient wireless control is required. This product is supplied without a coin-cell battery. The exact remote appearance, button layout, colour, and design may vary depending on available stock.
Key Features
- 21 Buttons: Provides multiple control inputs for DIY electronics projects.
- 38kHz IR Carrier: Compatible with TSOP38238 and other suitable 38kHz IR receivers.
- Long Control Range: More than 8 meters under suitable conditions.
- Wireless Control: Enables convenient infrared control of compatible circuits.
- Arduino Compatible: Suitable for Arduino and other microcontroller projects with a compatible IR receiver.
- Compact Design: Easy to integrate into DIY and automation projects.
- Battery Not Included: Requires a suitable coin-cell battery separately.
- Random Designs: Appearance and button layout may vary according to available stock.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Infrared Remote Control |
| Number of Keys | 21 |
| Communication Type | Infrared (IR) |
| Carrier Frequency | 38kHz |
| Compatible Receiver | TSOP38238 / Compatible 38kHz IR Receivers |
| Control Range | More than 8 meters* |
| Pointing Angle | Up to approximately 0°* |
| Battery | Not Included |
| Battery Type | Coin Cell |
| Application | Arduino / DIY / Home Automation |
| Design | Random / Varies by Stock |
| Colour | Random / Varies by Stock |
Applications
- Arduino projects
- Home automation
- DIY electronics
- IR-controlled projects
- Robotics projects
- LED control
- Relay control
- Motor control
- Display control
- Microcontroller projects
- Smart-home prototypes
- Educational electronics projects
- Remote-controlled DIY devices
Precautions
- Insert a compatible coin-cell battery before use.
- Check the battery polarity carefully.
- Do not short-circuit the battery terminals.
- Remove the protective plastic isolation sheet from the battery compartment, if present, before operation.
- Keep the remote away from water and excessive moisture.
- Use the remote within a suitable line-of-sight range of the IR receiver.
- Strong sunlight and other IR sources may affect infrared communication.
- Do not drop, disassemble, or physically damage the remote.
- Keep the remote and battery away from children when not supervised.
- Appearance and button layout may vary from the product image.