ITEM NAME:2 Pcs 1117 DC-DC Step-down Power Supply Module 3.3V with Heat Sink Black Descriptio n Description: Note: with power indicator and heat sink Note: The screw hole and the heat sink have a voltage of 3.3V. Be careful not to short circuit Specifications: Color: black as shown Size: Overall 3.1 * 1.4 * 1cm Output voltage: 3.3V Input voltage: 4.5-8V (DC) Maximum output current: