Infrared receiver module uses a 1838 infrared receiver This is a universal type, with steel, bendable legs, Size: 6.4 * 7.4 * 5.1MM, acceptance angle 90 °, working voltage 2.7-5.5V. Frequency 37.9KHZ, receiving distance 18 m. Use inside and outside the double-shielded package structure, Anti-light, electromagnetic interference capability, built-in infrared dedicated IC, can 500LUX light intensity work. Widely used: stereo, TV, VCR, CD, set-top boxes, digital photo frame, car audio, remote control toys, satellite receivers, hard disk player, air conditioners, heaters, fans, lighting and other household appliances.