This constant current LED driver powers 20 individual LEDs at a steady 20mA each — no resistors required, no math, no guesswork. If you have a project with a lot of LEDs and a variable or unregulated power supply, this driver handles the current regulation so your LEDs stay consistent and protected.

The driver operates across a wide input voltage range of 2 to 45 volts DC, delivering a regulated 20mA to each of its 20 output channels. That broad voltage tolerance means it works equally well on 3V coin cell circuits, 12V automotive or model railroad power packs, and 24V or higher industrial and theatrical supplies. Made in the United States, it is designed for reliable long-term use in both hobby and light commercial applications.

Common applications

• Model railroad layouts — drive 20 structure or signal LEDs from a DCC track bus or accessory bus without individual dropping resistors on each light
• RC vehicles — illuminate light bars, headlights, and interior LEDs on 1:10 or 1:8 scale crawlers and bashers running 2S–4S LiPo packs with consistent brightness regardless of battery state
• Automotive instrument clusters and accent lighting — power gauge backlights or footwell LEDs from a 12V or 24V vehicle bus without worrying about voltage sag dimming your lights
• Theatrical and prop builds — wire up panel indicators, cockpit mockups, or costume electronics where a single power rail feeds many LEDs that must all match in brightness
• Architectural and display lighting — retrofit LED accent strips into existing 12V–24V lighting systems where resistor drop calculations would be tedious across many parallel runs
• Electronics prototyping and education — test LED circuits at a known 20mA without stopping to calculate resistor values for each voltage change

Wiring & power notes

Connect your DC power supply positive and negative leads to the driver input, then wire each LED (or series string) between the corresponding output channel and ground. The driver sinks current on each channel independently, so LEDs do not need to be matched or balanced. Because this is a constant current device, the forward voltage of your LEDs is absorbed automatically — standard 2V red or orange LEDs work the same as 3.2V blue or white LEDs on the same board, as long as supply voltage exceeds the LED forward voltage by a small margin. Keep total supply voltage within the 2–45V rated range and observe polarity at the input terminals.

Quality LED products made in the USA since 2005.