Liquid Crystal Displays DC-DC Step-Down Buck Converter Power Supply Adjustable Push Button Module with LCD Display 5-23V 3A Specification: Brand new Material: electrical components Color: as picture shows Converter Type: DC-DC Input voltage: 5 ~ 23V (better voltage 20V) Output voltage: 0V ~ 16.5V (continuously adjustable) For peak current: 3A Motherboard Size: approx. 50 x 30 x 12 mm (L x W x H) Display Module: STN LCD LCD Size: approx. 37.5 x 17.0 mm (L x W) LCD Accuracy: 1% Conversion efficiency: 95% Load regulation (I): <= 0.8% Voltage regulation (U): <= 0.8% Quantity: 1pc Package Included: 1 x step down power supply module (module only) Note: Please allow 1-5mm errors due to manual measurement Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same