The infrared receiver module is 1838 Infrared receiver Acceptance angle: 90 , Operating voltage: 7-5.5V. Frequency: 37.9KHZ, Receiving distance: 18Meter. Using inside and outside the double-shielded package structure Anti-light, electromagnetic interference capability, built-in infrared dedicated IC Can in 500 LUX Light intensity to work properly. Widely used in: stereo, TV, VCR, disc players, set-top boxes, digital photo frame, car audio, remote control toys, satellite receiver, hard disk player, air conditioners, heaters, fans, lighting and other household appliances.