1. Mainly Uses Vs1838b Infrared Receiving Sensor Elements. 2. This Component Is A Device That Integrates Reception, Amplification And Demodulation. The Internal Ic Has Completed The Demodulation And The Output Is A Digital Signal. 3. It Can Receive Standard 38khz Modulated Remote Control Signals. The Sensor Comes With 4 Positioning Holes To Facilitate You To Fix The Sensor To Other Devices. This Module Is Compatible With Microcontroller Control Boards, Such As for Series Microcontrollers. 4. The Module Contains 2 Interfaces To Choose. One Is An Anti-Reverse Insertion White Terminal With A Spacing Of 2.54mm. When In Use, Use The Module'S Own Wires To Connect To The Microcontroller. 5. To Facilitate Wiring, An Expansion Board Is Specially Designed That Is Fully Compatible With This Module And The for R3 Microcontroller. The Other Is A Pin Header Interface With A Pitch Of 2.54mm, Which Can Be Directly Connected To The Microcontroller Using Male-To-Female Lines. 1. Working Voltage:DC3.3-5V 2. Interface:Anti-Reverse Interface/Pin Header Interface 3. Positioning Hole Size:Diameter 3mm 4. Wire Length:200mm(Lead Not Included) 5. Control Signal:Digital Signal 6. Receiving Angle:90° 7. Frequency:38KHZ 8. Receiving Distance:18m Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Colour:As Shown Material:PCB Package Contents: 1 * Infrared Receiving Sensor Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.