This module uses driver to drive four standard anode tubes. It also has a clock point, this allows you to Move away from the Serial Monitor to display values from your sensor by using this simple to use 4 Bits 8 LED module. Features - Color: As shown. - Material: Resin. - Size: 4.00X2.00X0.30cm/1.57X0.79X0.12in. - Supply voltage: 3.3V-5V - Module : 30-80mA (When 5V supply power) - The Positioning holes in this LED Display Module 4 Bits has 4 screws positioning hole diameter is 2.2mm and the positioning of the module is easy to install with easy to achieve the inter-module combination. - The unit easily connects through the VCC, GND, and CLK pin and displays the digits in red light. - Thanks to the you can control it using only 2 wires, leaving more pin available on your to connect other things. - This unit is suitable for uses in induction cooker, micro-wave oven and small household electrical appliance. - It also has a clock point, this allows you to Move away from the Serial Monitor to display values from your sensor by using this simple to use 4 Bits 8 LED module. Package list: 2 modules