Item Package Quantity:10DC-DC buck voltage regulator module 6-24V 12V/24V to 5V 3A USB charger module buck converter regulator Specifications: Conversion efficiency: can up to 97.5% (6.5V to 5V 0.7A) (after short reverse protection and fuses test data) Switch frequency: 500KHz Output indicator: output voltage indicator is red Operating temperature: industrial grade (-40 ¡æ to + 85 ¡æ) (the higher the ambient temperature, the lower the output power) Output overvoltage protection: input 1.5A fuse, output 5V with 300W TVS tube clamp protection Full load temperature: 30 °C Static current: 0.85 mA Load regulation: ±1% Load regulation: ±1% Voltage regulation: ±0.5% Dynamic response speed: 5% 200uS Input reverse polarity protection: reverse polarity protection diode Connection mode: welding Input mode: welding Output mode: USB Size: 26.4 x 15 x 7.4 mm (L x W x H) Package includes: 2pcs DC-DC buck voltage regulator modules