CHQ1838 Infrared Receiving Head with iron shell

Specifications
Carrier Frequency: 38 kHz
Operating Voltage: 2.7V to 5.5V DC
Receiving Distance: Up to 15 meters (some sources cite 10m)
Reception Angle: 70°
Current Consumption: Low, typically
≤1.5mAis less than or equal to 1.5 mA
≤1.5mA
Output Type: Active low (digital output, compatible with TTL/CMOS)
Operating Temperature: -25°C to +85°C (some models -20°C to +80°C)
Pinout: Typically VOUT, GND, VCC 

Applications

Component structure:Internal photodetector and preamplifier IC in one package
Shielding:Metal casing for improved immunity againsst electric field disturbances and ambient light
Applications:TV,audio,DVD,air-conditioner remote controls and DIY hobby projects
Compatibility:Commonly used with KY-022 modules and microcontroller project.