TSOP 1738 TSOP1738 is an infrared receiver tuned to receive IR of frequency 38 kHz only. It is perfect for making obstacle sensors and reading signals from most IR remotes (TV, AC, Home Theatre Remotes, etc). When used as a receiver in distance sensors, This tsop1738 provides better performance as it allows better reception and protection from ambient light compared to other IR receivers. It can be used to read the signals of most IR Remotes. Composed of robust materials like reinforced plastic housing and aluminium shielding between the receiver and accessories, it ensures long operational life even under the toughest external conditions when exposed directly to sunlight or raindrops etc. With mounting fixtures that come with this tsop1738 allow for hassle-free installation onto any flat surfaces without making modifications or extra holes on them unlike some other models found elsewhere - so you can rest assured there will be no inconvenience during the assembly process whatsoever! Using this superior infrared receiver module means driving your automation needs quite conveniently! Put simply; anyone who requires nonstop wireless performance within their project along with great functionality should get themselves one right away. it'll take real stress off the burden by accomplishing tasks faster & more reliably than ever before whilst not compromising at all upon data integrity throughout the transfer session either !! The TSOP1738 IR sensor module consists of a PIN diode and a preamplifier which are embedded into a single package. The output of TSOP is active low and it gives +5V in the off state. When IR waves, from a source, with a center frequency of 38 kHz incident on it, its output goes low. Lights coming from sunlight, fluorescent lamps, etc. may cause disturbance to it and result in undesirable output even when the source is not transmitting IR signals. A bandpass filter, an integrator stage, and automatic gain control are used to suppress such disturbances.  TSOP module has an inbuilt control circuit for amplifying the coded pulses from the IR transmitter. Pinout: Pinout of TSOP 1738 The sensor can be used for Proximity detection applications along with an IR-led in robotics and security systems. It receives an IR signal at 38khz frequency. Applications:  Receive IR signals Decode Remote signals Analyze, re-create or duplicate remote Signals Wireless control applications Receiver circuit for IR remote controls IR Remote tester circuits Package Includes: 1 x TSOP 1738  Specifications Supply Voltage 5V Power consumption 0.4 to 1.0 mA Min Radiation 0.35 mW/m2 type Angle of detection 90 degrees Dimensions of the casing  12.5 x 10 x 5.8 (mm) Weight  5 grams