20Pcs IR Receiver Infrared Radiation Module 38KHz TSOP4838 DIP-3 Feature: Type: TSOP4838 IR receiver module Operating frequency: 38KHz Directivity: 45 Operating temperature range: -25 C to +85 C Supply voltage range: 2.7V to 5.5V Opto case style: through hole Size: 3 x 0.5cm Package included: 20 x IR receiver module