(includes receiver, Note: this system carrying case, has A-H, T/F, software with Yes/No response upgrades, tech capabilities ONLY support and 5 year limited warranty) Shipping will have to be confirmed by vendor. Please contact Technologyfor a quote. Class set of 24 004$755.00 IR‐N ‐SYS ‐0024.
What is an infrared (aka IR) sensor?
An IR sensor is an electronic instrument that scans IR signals in specific frequency ranges defined by standards and converts them to electric signals on its output pin (typically called signal pin). The IR signals are mainly used for transmitting commands over the air on short distances (typically few meters) like what you’ve already worked with on TV remote controls or other similar electronic devices.
IR communication protocol
Each signal represents a specific code. Electric signals can be converted back to the actual data/code that sender has sent. When you press a button on your TV remote control, it generates a signal corresponding to the button code (e.g. On/Off, Volume Up, etc.) and sends it for a receiver (in this case your TV). Both sender and receiver agreed on a set of codes so that receiver knows what to do based on each code. The way a code should be modulated (modeled) as a signal is defined in different standard and each sensor manufacturer normally tries to produce a product compatible with them so that it could be used in different devices. One of the most known standard protocols is from NEC. You can find a brief history of IR protocols on Wikipedia under Consumer IR title.