You are purchasing a high-speed PWM LED dimmer control PCB to make your own LED dimmer.  This listing is for the bare PCB only.  No other parts are included.  You must purchase and solder the parts.  Please see link below for schematic and bill-of-materials.  

Features:
- Simple Op-Amp circuit.  
- >8kHz PWM operation for flickerless viewing, especially from video cameras.
- PWM operation frequency adjustable.
- High dimming range.  1000:1 dim range.
- 0-10V or 0-5V input to PWM LED output.
- High-power MOSFET output.
- Trim adjustment.
- Automatic gradual increase/decrease LED dimming possible.

PCB specification: 
1.  1/16” glass fiber.  FR4 type, ROHS and lead-free. 
2.  Through-hole plated, HASL coated holes. 
3.  Thick copper traces, double-sided copper traces. 
4.  Robust design, reliable operation. 
5.  1.75”x0.8” (45x20mm). 

Available Model
PCB-PELDP1: PWM LED dimmer control PCB, no parts, not assembled. All electronic parts to populate the PCB are available from Digi-Key.   
Parts kit available.
Please contact us at on-sales(at)Onstatetech(dot)com for larger quantities or question on your application. 
Product info/data:
PELDP1 PWM LED dimmer info.:  PELDP1 PWM LED Dimmer
PELDP1 day/night photocell on/off circuit.: CIR-PELDP1 PC Schematic
PELDP1 TV LED backlight.  USB Auto ON/OFF: CIR-PELDP1 5V USB Schematic   Youtube Video

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