PJUTS 3-in-1 is a type of Solar-Powered Public Street Lighting system that integrates three main functions into one device. The 3-in-1 concept usually refers to the combination of main elements in one unit to enhance efficiency and ease of installation.

Main Components of the 3-in-1 PJUTS:

- Solar Panel: Converting sunlight into electrical energy.
- Battery: Stores electrical energy for use at night.
- LED Lamp: Provides bright energy-efficient lighting.

These three components are designed to work together in an integrated system, but they are usually not as compact as the All-in-One PJUTS. In a 3-in-1 system, components such as batteries or solar panels can still be separated, but they remain part of a single installation package.

Advantages of PJUTS 3 in 1:

- Design Flexibility: Components can be positioned according to location needs.
- Energy Efficiency: Utilizing renewable energy sources.
- Ease of Installation: Designed as a single package, although more modular compared to All-in-One.

Just like the PJUTS All-in-One, this system is usually used for public street lighting, parks, parking areas, or remote locations that are difficult to reach by conventional power grids.