0
IR (infrared) remote controls are considered line of sight, meaning the remote has to "see" the device it is controlling. An RF remote is not because the signal has the strength to pass through some objects.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
Where can one purchase an RF remote control?
One can purchase an RF remote control from a variety of stores. Kmart, Crutchfield, Best Buy, and eBay sell RF remote controls. One can find reviews of different RF remote controls at CNET.
High range remote control using rf signal based on microcontroler?
try for 455mhz rf remote transmitter ,455 mhz remote controls are not available in the market
How do electronic toys work?
Generally, there are two types of remote controls: infrared (IR), and radio frequency (RF). Infrared remote controls work by sending pulses of infrared light to a device, while RF remote controls use radio waves in much the same way. Pragmatically, the biggest difference between the two is range. IR remote controls require a clear line of sight to the receiving device and their range maxes out at about 30 feet (9.14 meters). RF remotecontrols can go through walls and around corners, with a range of roughly 100 feet (30.48 meters).Most home entertainment components such as stereos, televisions and home entertainment centers use IR remote controls. The remote contains an internal circuit board, processor, and one or two Light Emitting Diodes (LEDs).When you push a button on a remote control, it transmits a corresponding code to the receiving device by way of LED infrared pulses. The idea is somewhat akin to flashing an SOS signal, but instead of letters, the flashing LED light is transmitting a series of 1s and 0s. The "1" might be represented by a long flash, while "0," a short flash. A receiver, built into the component, receives the pulses of light and a processor decodes the flashes into the digital bits required to activate the function.Along with the desired function, remote controls must also piggyback other data. Firstly, they transmit the code for the device they are controlling. This lets the IR receiver in the component know that the IR signals it is picking up are intended for it. It essentially tells the component to start listening. The function data follows, capped by a stop command to tell the IR device go back into passive mode.Some remote controls can be very finicky, requiring the user point the remote directly at the component. This is due to a weak transmitter. Changing the batteries can help, but if the transmitter itself is poor, pulses are transmitted in a narrow beam. More robust IR transmitters, and remote controls with double LEDs, transmit broader beams that allow the user to point the remote in the general direction of the transmitter.Sometimes it happens that a recliner or favorite spot on the couch does not have a clear line-of-sight to the entertainment center or television. Often a coffee table or some other object is in the way. When this happens we find ourselves raising an arm, trying to control the object "around" the device. This can get quite annoying, but there's an easy alternative.Since light bounces off objects it is sometimes more convenient to point remote controls towards a flanking wall or even the ceiling to change a channel or send a function command. The light will bounce off the surface of the wall or ceiling and scatter. If you bounce it at an advantageous angle, the scattering light will reach the component. Often it's easiest, with elbow resting on an armrest, to flip your wrist back and point the remote up at a wall behind you. This can work quite well, even though the remote is pointing in the exact opposite direction of the component. Once you find the easiest sweet spots around the room from which to bounce your signal, you can use these instead of struggling with trying to get around your obstructed line of sight.Garage door openers, alarm systems, key fobs and radio-controlled toys use RF remote controls. RF remote controls work essentially the same as IR remote controls, except they use radio waves. As stated, radio waves can also penetrate walls and go around objects and corners, making RF arguably more convenient than IR.Some high-end entertainment systems come with RF remote controls for expanded remote range. There are also IR-to-RF remote control converters that allow IR remote controls to extend their range through utilizing a RF translator that basically acts as a middleman. The RF converter relays the IR signal in RF waves to get it further. The converter on the component side reverts the RF signal back to IR so the component can understand it.
What waves are used in remote controls?
Remote controls use both infrared and radio frequency technologies. Your typical TV remote uses infrared and your typical car remote uses RF.
Does leaser diode use in tv remote?
No, TV remotes use IR light and/or RF transmitter.
What is the advantage of RF over IR?
Because RF does not require line-of-sight.
What is remote control RF cabability?
This is bad spelling. It is remote-control RF capability!
Wireless mice use what two technologies?
Wireless mice can use RF (Radio Frequency) or IR (Infra Red) technologies. IR requires line of sight to the mouse receiver, similar to a television remote control. RF is usually the preferred method, since it does not require line of sight. Hope that helps :)
Can a Harmony 670 remote control a Harbor Breeze ceiling fan?
If the harmony website doesn't have a device listing for your fan, then you need to learn it. With the remote plugged in, and the harmony software running, you can select 'learn new command' somewhere in the menus. When it asks you to, point the original ceiling fan remote towards the back of the harmony, and teach it the buttons you wish to use. If you don't have the original fan remote, you may not be able to control it. Actually the main problem here is the 880 is not an RF remote and the Triton is an RF Fan. I use URC products so I am not sure what Harmony offers other than upgrading to the 890 remote. All you need to do is get something to translate your IR remote signals to RF for the fan.
What is an RF remote?
Radio Frequency Remote
How do remote communicate with TV sets?
most remotes use infrared light (IR) more expensive remotes use radio frequency (RF) IR is shortrange and requires line of sight... think of it like a flashlight...you could bounce it off a mirror at the TV and it would get there, but if something is in the way the light gets blocked. RF is radio waves and can travel through walls and other objects...to operate devices in another room.
What type of Sensors are used in traffic density?
IR and RF sensors
