This module (1838) is a miniaturized infrared receiver for remote control and other applications requiring improved ambient light rejection.
Features:

1. photo detector and preamplifier in one package
2. internal filter for PCM frequency
3. inner shield, good anti-interference ability
4. high immunity against ambient light
5. improved shielding against electric field disturbance
6. 3.0 V or 5.0 V supply voltage; low power consumption
7. TTL and CMOS compatibility

Specifications:

1. supply voltage: 3 to 5 VDC
2. max. supply current: 1.5 mA
3. B.P.F. center frequency: 37.9 KHz
4. dimensions: 28 x 15 x 10 mm

wpi317a4v01.pdf

ce_rohs_open.pdf