Introduction
This manual provides comprehensive instructions for the Smartby remote control, designed for seamless operation with Apex DT150, DT250, DT250A, DT502A, and DT502 digital TV tuner converter boxes. Please read this manual thoroughly before use to ensure proper setup and functionality.

Figure 1: Smartby Remote Control. This image displays the front view of the remote control, highlighting its compact design and button layout.
Setup
1. Battery Installation
The remote control requires two AAA batteries (not included). Follow these steps to install them:
- Locate the battery compartment cover on the back of the remote control.
- Press down on the tab and slide the cover off in the direction of the arrow.
- Insert two AAA batteries, ensuring the positive (+) and negative (-) terminals align correctly with the markings inside the compartment.
- Slide the battery compartment cover back into place until it clicks securely.

Figure 2: Battery Compartment. This image shows the back of the remote control with the battery compartment open, illustrating the correct orientation for AAA battery insertion.
2. Initial Use
This remote control is pre-programmed and does not require any additional setup or programming. Once batteries are installed, it is ready for immediate use with compatible Apex digital TV tuner converter boxes (DT150, DT250, DT250A, DT502A, DT502).
Operating Instructions
Point the remote control directly at the Apex digital TV tuner converter box. Ensure there are no obstructions between the remote and the converter box's infrared receiver.
Key Functions:
- POWER: Turns the converter box on or off.
- CH +/-: Changes the channel up or down.
- VOL +/-: Adjusts the volume level.
- MUTE: Silences the audio output.
- MENU: Accesses the converter box's main menu.
- EXIT: Exits the current menu or screen.
- INFO: Displays program information.
- GUIDE: Opens the electronic program guide.
- INPUT/SOURCE: Switches between input sources on the converter box.
- Number Buttons (0-9): Directly enters channel numbers.
- Navigation Buttons (Up, Down, Left, Right, OK): Used to navigate menus and confirm selections.

Figure 3: Remote Control Button Layout. This image provides a clear view of all buttons on the remote control, with common functions indicated.
Maintenance
Cleaning:
To clean the remote control, use a soft, dry cloth. Do not use liquid cleaners, sprays, or abrasive materials, as these can damage the remote's surface or internal components.
Battery Replacement:
Replace batteries when the remote control's response becomes inconsistent or stops working. Always replace both batteries at the same time with new AAA batteries. Do not mix old and new batteries, or different types of batteries.
Storage:
If the remote control will not be used for an extended period, remove the batteries to prevent leakage, which can cause damage to the device.
Troubleshooting
- Remote not responding:
- Check if the batteries are correctly installed with the correct polarity.
- Replace the batteries with new ones.
- Ensure there is a clear line of sight between the remote control and the converter box's infrared sensor.
- Verify that the converter box is powered on.
- Buttons not working:
- Clean the remote control surface, especially around the buttons, to remove any debris that might be obstructing them.
- If only specific buttons are not working, the remote may be damaged and require replacement.
- Interference:
- Bright light sources, such as direct sunlight or certain types of fluorescent lighting, can interfere with the remote's infrared signal. Try operating the remote in a different lighting condition.
Specifications
| Product Dimensions: | 6.5 x 2.4 x 1.05 inches |
| Item Weight: | 1.76 ounces |
| Model Number: | 4330949122 |
| Batteries Required: | 2 AAA batteries |
| Compatible Devices: | Apex DT150, DT250, DT250A, DT502A, DT502 Digital TV Tuner Converter Boxes |
| Color: | Black |
| Special Feature: | Ergonomic design |
Warranty and Support
Return Policy:
This product is covered by a 30-day return policy. If you encounter any issues or are not satisfied with your purchase, please refer to the retailer's return procedures within 30 days of purchase for a refund or replacement.
Customer Support:
For further assistance or inquiries, please contact the retailer or manufacturer through their official support channels. Please have your product model number (4330949122) and purchase details ready when contacting support.