All of the LED boards are designed with these same features in common:

• Dimensions: 25.4 mm x 20 mm x 1.6 mm
• Two 4-pin JST SH connectors
• Four M2.5 through holes for mounting
• Surface mount or radial LED mounted in the center
• On-board voltage regulator enables operation from 3.3V to 5V input voltage
• Active 16mA (or 24mA) constant current LED driver which maintains stable LED current