When it comes to modern public and commercial restrooms, hygiene, convenience, and reliability are non-negotiable. Introducing the RJY-K13 Control Box by Rajeyn, the innovative core behind a new generation of touchless sensor faucets that solves long-standing industry pain points while delivering unmatched performance, flexibility, and ease of use. Designed for high-traffic environments—from hotels and offices to schools and healthcare facilities—this control box transforms basic sensor faucets into smart, temperature-controlled solutions that elevate both user experience and facility management.

✅ 1. Manual Precision Temperature Control: No More Cold Water Headaches

One of the biggest frustrations with traditional single-cold sensor faucets is the lack of adjustable warm water, forcing users to endure icy rinses or install costly, complex separate mixing valves. The RJY-K13 solves this problem with an integrated manual precision temperature control dial, putting warm water comfort directly at your fingertips.
  • Eliminate the “single-cold only” limitation: The control box connects to both hot and cold water lines, letting you mix water to your ideal temperature with a simple turn of the dial.
  • One-time setup, long-lasting stability: Calibrate your preferred temperature once, and the system maintains consistent water flow temperature automatically, eliminating fluctuations caused by water pressure changes or usage spikes. No more sudden cold or hot water shocks mid-rinse—just steady, comfortable warm water every time.
This feature is a game-changer for commercial spaces, where user comfort directly impacts satisfaction and hygiene compliance.

✅ 2. Flexible Power Options: Adapt to Any Installation Scenario

Power supply flexibility is critical in commercial settings, where access to electrical outlets or consistent AC power can vary widely. The RJY-K13 control box offers three power configurations to suit every project’s unique needs:
  • Single DC (Battery-Powered): Ideal for locations without easy access to AC power, with long-lasting battery life to minimize replacements.
  • Single AC (Plug-In): Perfect for areas with reliable electrical service, ensuring uninterrupted operation without battery changes.
  • AC/DC Dual-Power: The ultimate backup solution, combining the stability of AC power with the reliability of battery backup. If AC power fails, the system seamlessly switches to battery power to keep the faucet operational.
No matter your facility’s power setup, the RJY-K13 has you covered, eliminating the stress of retrofitting or unexpected downtime.

✅ 3. Hassle-Free Installation & Maintenance: Designed for Facility Managers

Traditional sensor faucet systems often come with complicated installation processes and frustrating maintenance, requiring plumbers to disassemble entire units just to replace batteries or repair components. The RJY-K13 is built with user-friendly design at every step:
  • Tool-free, modular installation: The control box is pre-configured with universal water line connections and plug-and-play wiring, fitting seamlessly into standard wall-mount basin setups. The compact, enclosed unit hides all wiring and plumbing under the sink, keeping your restroom design clean and clutter-free.
  • Simplified maintenance: Replacing batteries or servicing the system is as easy as removing the battery compartment cover and swapping out the battery module. No need to shut down the entire restroom, call a plumber, or disassemble the faucet—routine maintenance takes minutes, not hours.
This low-maintenance design drastically reduces long-term operational costs, making the RJY-K13 a cost-effective choice for busy facilities.

✅ 4. Built-In Power-Off Protection: Safety & Reliability You Can Count On

Unexpected power outages can cause serious issues with sensor faucets, from water leaks to constant dripping. The RJY-K13 includes an automatic power-off protection feature that solves this problem:
  • When the power supply is interrupted (whether AC or DC), the control box immediately closes the built-in solenoid valve, shutting off water flow completely.
  • This prevents uncontrolled water leaks, flooding, and wasted water, even during extended outages. Facility managers can rest easy knowing the system won’t cause costly water damage or mess when the lights go out.
At Rajeyn, we understand that commercial restroom solutions need to balance user comfort, hygiene, and practicality. The RJY-K13 Sensor Faucet Control Box isn’t just an accessory—it’s a complete upgrade for your touchless faucet system, solving the pain points that have plagued traditional designs for years.

Whether you’re retrofitting an existing restroom or designing a new commercial space, the RJY-K13 delivers:

✅ Comfortable, adjustable warm water

✅ Flexible power options for any environment

✅ Stress-free installation and maintenance

✅ Reliable safety features for peace of mind

Upgrade your restroom experience today with the RJY-K13—where smart design meets real-world functionality.