The TX21 utilizes a high-contrast black-and-white segmented screen, ensuring clear readability in both bright and low-light conditions. The screen simultaneously displays three core parameters—voltage, current, and remaining battery capacity—enabling RV users to monitor battery status in real time. With button-controlled navigation, users can toggle through six key data points, including power, total capacity, and estimated remaining runtime, fully addressing battery management needs during travels.

Designed for extended off-grid RV use, the TX21 operates at minimal power consumption, with standby power as low as 25mW, avoiding unnecessary drain on the vehicle’s battery. Coupled with high-precision sampling technology, it delivers highly reliable data with a typical accuracy of ±1.0%, empowering users to make informed energy decisions and prevent unexpected power failures.

With Bluetooth support, the TX21 pairs with a dedicated mobile app, allowing users to review historical data and adjust device settings remotely. The built-in ambient light sensor automatically adapts screen brightness—reducing glare at night while maintaining clarity during the day—for an optimized round-the-clock user experience.

The TX21 offers an optional surface-mount casing, enabling tool-free installation without panel cutouts, ideal for retrofits and DIY enthusiasts. Whether wall-mounted or panel-embedded, it easily integrates into various RV interiors, bringing intelligent power management to life quickly and effortlessly.

• Bluetooth connectivity for app pairing
• Light sensor for automatic backlight adjustment
• Touch buttons with screen lock function
• Six selectable parameters for display switching
• Waterproof surface
• Ultra-low power consumption in sleep mode
• Optional surface-mounted casing for easy installation
• Screen lock function

Battery monitors can be used in any scenario involving battery packs. They continuously track the status of the battery pack and display key parameters such as remaining charge, current voltage, current, power, and other relevant data. This allows users to monitor battery health in real time, helping to protect the battery and extend its lifespan.

It is compatible with mainstream battery types on the market, such as lead-acid batteries, lithium-ion batteries, lithium iron phosphate batteries, sodium batteries, etc.

We provide a one-year warranty period. After one year, if the product is damaged due to its own quality issues, we will continue to offer repair or replacement services based on the specific circumstances. For cases where returns or exchanges are not possible due to reasons such as shipping costs, replacements will be sent with the next order.

Please reach out to us via the contact information on our "Contact Us" page.