In the world of modern interactive technology, simplicity and reliability are everything. When deploying touch sensors on large screens across exhibition halls, corporate offices, museums, or retail spaces, one of the biggest challenges has always been power and data management. This is where Power over Ethernet (PoE) becomes a game-changer.

What is PoE?

It was always an issue powering a remote device on a network. In addition to the data connection, a separate power connection had to be provided for the remote device. Devices such as VoIP phones or surveillance cameras are often installed in locations where obtaining a separate power outlet is difficult or expensive.

PoE solves this problem elegantly by delivering both power and data through a single Ethernet cable. Early specifications supported two methods:

  • Mode A – power is piggy-backed on the data pairs
  • Mode B – power is delivered over the unused wire pairs in Cat 5 or Cat 6 cables

For today’s Gigabit and faster networks, where all four pairs are used for data, Mode A has become the standard. The technology works by adding a DC voltage to the differential Ethernet signal at the switch or injector. This power is then safely extracted at the receiving device.

Power levels are carefully managed, with maximum injection voltages reaching up to 57 volts. Higher-power devices use intelligent handshake negotiation to ensure safe and optimal power delivery. While low-power devices offer true plug-and-play simplicity, higher-demand installations require proper cable planning and compatibility checks.

LiDAR Magic PoE Series: Designed for Real-World Interactive Projects

At LiDAR Magic, we have integrated advanced PoE technology into our compact laser touch sensors — most notably the M10 — to deliver a seamless experience for large-scale interactive applications.

Our PoE-enabled LiDAR touch sensors combine high performance with effortless installation:

  • Ultra-compact design that fits discreetly on any large screen or display frame
  • 10-meter scanning range with 3cm high precision, enabling natural and accurate multi-user touch interaction
  • Single Ethernet cable solution — one cable handles both power and high-speed data transmission
  • Zero voltage drop over 100 meters, ensuring stable performance even in expansive installations

This means no messy power adapters, no additional electrical wiring, and dramatically reduced installation time and cost.

Key Industry Advantages of LiDAR Magic PoE Touch Sensors

  1. Simplified Deployment Installers only need to run one cable. This is especially valuable for ceiling-mounted, wall-spanning, or hard-to-reach interactive displays in airports, shopping malls, and museums.
  2. Lower Total Cost of Ownership Reduced cabling, fewer power outlets, and faster installation translate into significant savings on both initial setup and long-term maintenance.
  3. Enhanced Reliability & Safety PoE systems are designed with multiple safety mechanisms. Combined with our stable voltage performance over long distances, LiDAR Magic sensors deliver consistent, flicker-free touch response 24/7.
  4. Flexible Scalability Whether you’re building a 5-meter interactive wall for a corporate showroom or a 20-meter immersive experience in an exhibition, our PoE sensors scale effortlessly without power-related complications.
  5. Clean Aesthetics No visible power bricks or tangled cables — perfect for modern minimalist designs demanded by architects and experience designers.

From interactive digital whiteboards in smart conference rooms to massive touch walls in science centers and retail flagship stores, LiDAR Magic PoE sensors are redefining what’s possible in large-screen interaction.

Last but not Least

PoE is more than just a convenience — it is a foundational technology that removes traditional barriers in interactive system design. By combining precise LiDAR touch detection with reliable Power over Ethernet, LiDAR Magic delivers solutions that are powerful, elegant, and future-ready.

Ready to bring touch magic to your next large-screen project?

LiDAR Magic — Bring magic to interaction.