Picture Information

Image is loading
Image not available
Have one to sell? Sell it yourself

Details about  4ea Matched Infrared LED Photo Emitter / IR Photo Detector Receiver Sensor, NOS

4ea Matched Infrared LED Photo Emitter / IR Photo Detector Receiver Sensor, NOS
Get fast shipping and excellent service from eBay Top-rated sellers.

Find out more about the Top-rated seller program - opens in a new window or tab

100% Positive feedback
  • Consistently receives highest buyers' ratings
  • Ships items quickly
  • Has earned a track record of excellent service

Item Information

Item condition:
Error icon
More than 10 available / 82 sold
Please enter a quantity of $qty_dummy$ or less Please enter a quantity of 1 Purchases are limited to $qty_dummy$ per buyer Please enter quantity of 1 or more Please enter a lower number Choose quantity that is less than $qty_dummy1$ or equal to $qty_dummy$ You can only choose quantity that is equal to $qty_dummy$
US $3.99
Approximately C $4.86(including shipping)
15 watching
100% positive feedback
82 sold
New condition
No additional import charges at delivery!
This item will be shipped through the Global Shipping Program and includes international tracking. Learn more- opens in a new window or tab
US $13.17 (approx. C $16.03) International Priority Shipping to Canada  help icon for Shipping - opens a layer
| See details
Item location:
Burton, Michigan, United States
Ships to:
United States and many other countries | See details
Import charges:
US $0.00 (amount confirmed at checkout)  help icon for Shipping - opens a layer
Includes international tracking
International shipping and import charges paid to Pitney Bowes Inc. Learn More- opens in a new window or tab
14 day money back or item exchange, buyer pays return shipping See details
 | See details - opens in a new window or tab
Get the item you ordered or get your money back.
Covers your purchase price and original shipping.
eBay item number:
Seller assumes all responsibility for this listing.
Last updated on  Mar 29, 2015 22:24:20 EDT  View all revisions

Item specifics

New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read moreabout the condition
MPN: Phototransistor Light Beam Transistor Assy New
* New Old Stock *
Infrared IR PhotoEmitter / PhotoDetector Pair, T-1 Size
( Purchase is for 4 of the Units Shown )

Please refer to the additional photos I've provided above.
They show a couple simple circuits you can either use or
modify to suit your needs in implementing the application
ideas listed below.

Want a Better Deal?  Click Here

Application ideas:

Make a Tester for your IR Remote Controls
Detect whether Doors are Open or Closed
Detect when windows have been opened.
Detect drawers and cabinets that have been opened.
Detect when a piece of equipment is properly positioned
Detect passing items on an assembly line and increment a counter

I've provided lots of additional information below on this
Photo LED IR Pair, but first I should tell you there are two
ways you can get 10 of these for FREE.

To get 4 Sets of these Totally Free, just use the link below
to visit my eBay store and buy $20 worth of merchandise.
You do need to include a note with your PayPal payment
letting me know you're acting on this free offer. Otherwise,
I won't know to send you this item.

Photo Emitter / Detector Operation:
Obviously this Photo Detector and Photo Emitter are
designed to be compatible with each other. So, you
don't have any worries about compatibility here. That's
something you can't always be sure of when you purchase
a Photo Detector and Photo Emitter separately some
place else.  Many of you will probably unsolder the
Emitter and Detector from each other and place them
across from one another. That should obviously give
you a much greater detection range, one that is probably
measured in feet rather than fractions of an inch.

However, should you decide to use them as they
are with the aid of a reflective surface, that's ok too.
The reflective surface will just have to be in close
proximity to the semiconductor pair. When the IR
Photo Detector is receiving light from the Photo
Emitter, it's resistance changes becoming about
one tenth of it's dark resistance. This makes
detecting the presence of a reflected surface
very easy. It just requires a simple voltage comparator
to do the monitoring. In fact, a 555 timer so wired
to use it's internal comparators would probably
do the job very nicely, and it's output would be
capable of activating a relay, a light, an alarm,
or even a High-Power Solid State Relay.

The optimum distance between the Emitter/Detector
pair and the reflective surface is about 1/4 inch.
However, that distance can be increased by careful
selection of the photo detector series resistor and/or
by setting the comparator trigger point to a lower voltage.

I've included a circuit diagram that shows a sample
detection circuit.

This is a far better way to detect the presence of a
near by moving object than using mechanical switches
that can get out of adjustment or wear out. There is
nothing mechanical to wear out with this technology.

More Info on building a Tester for IR Remote Controls:
You can use the same basic comparator circuit shown
in the 2nd photo; however, you might prefer to have
the Green LED light only when a signal is being received
from the IR Remote Control being tested. In such case,
you will need to connect the Green LED between the
3.3k ohm resistor and the minus supply lead, with the
Green LED anode connected to the 3.3k ohm resistor.

I have tried this basic circuit with a half dozen different
IR remote controls I have, and it detected all of them.
The Data Stream sent by some of the remotes is quite fast
though, so you might have to watch the Green LED closely
on some remotes. Of course, you could easily remedy
that little inconvenience by connecting a 555 Timer
capacitively coupled to the output of the comparator
in Monostable Mode. That way when the 555 timer detects
a pulse at the comparator output, the 555 timer can light
a 2nd LED for whatever length of time you desire (like
perhaps a second or two).

Two great books for the home electronics hobbyist that
will provide you with lots of great "Know How" on how to
do these kind of things (and much more) are Don Lancaster's
"TTL Cookbook" and his "CMOS Cookbook".

Sorry, I don't have any hard specs on this assembly, but I
can tell you that it was intended for use in automotive
applications. So the maximum voltage rating is probably
around 25 volts. The Photo LEDs are T1 size (3 mm Diameter).
The Total width of the Photo LED pair is 12 mm and the total
height including lead length is 17 mm.

Application ideas:

Detecting when the big garage door is open.
Detecting when home windows and  doors have been opened.
Detecting when drawers and cabinets have been opened.
Detecting when a piece of equipment is properly positioned (or is out of position)
Detect passing items on an assembly line and increment a counter

To get combined shipping, you must request a
new invoice from me and use the link provided in
the new invoice to send your PayPal Payment from.
Sorry, I do not provide combined shipping if you
have not followed that procedure.

Please understand that it requires a lot of extra
time and effort to combine shipping after your
payment has been sent because I must then
recalculate the shipping, update the packing slips,
Log into PayPal, issue the shipping refund, and
send the appropriate email notifications. I simply
do not have time to do all that for everyone after
the fact. I'm more than willing to help you get
combined shipping, but I need your cooperation
in that effort as well. Thank you.

Questions and answers about this item

No questions or answers have been posted about this item.

Seller assumes all responsibility for this listing.

Shipping and handling

Item location: Burton, Michigan, United States
Shipping to: United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, Korea, South, Indonesia, Taiwan, South Africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi Arabia, Ukraine, United Arab Emirates, Qatar, Kuwait, Bahrain, Croatia, Republic of, Malaysia, Turkey, Chile, Colombia, Costa Rica, Dominican Republic, Panama, Trinidad and Tobago, Guatemala, El Salvador, Honduras, Jamaica
Excludes: Saint Pierre and Miquelon, Greenland, Bermuda, Russian Federation, Guernsey, Gibraltar, San Marino, Belarus, Albania, Bosnia and Herzegovina, Luxembourg, Jersey, Svalbard and Jan Mayen, Montenegro, Liechtenstein, Serbia, Monaco, Vatican City State, Iceland, Moldova, Macedonia, Andorra, Kenya, Algeria, Botswana, Lesotho, Chad, Burundi, Mali, Sierra Leone, Mayotte, Morocco, Zimbabwe, Ghana, Central African Republic, Côte d'Ivoire (Ivory Coast), Congo, Democratic Republic of the, Seychelles, Somalia, Mauritius, Eritrea, Burkina Faso, Nigeria, Zambia, Comoros, Djibouti, Mauritania, Equatorial Guinea, Niger, Togo, Tunisia, Cape Verde Islands, Saint Helena, Malawi, Congo, Republic of the, Gambia, Guinea-Bissau, Libya, Rwanda, Uganda, Cameroon, Madagascar, Senegal, Egypt, Angola, Namibia, Gabon Republic, Western Sahara, Benin, Tanzania, Reunion, Guinea, Swaziland, Liberia, Ethiopia, Mozambique, Peru, Venezuela, Uruguay, Falkland Islands (Islas Malvinas), Guyana, Bolivia, Brazil, French Guiana, Paraguay, Argentina, Ecuador, Suriname, Vietnam, Brunei Darussalam, Laos, Cambodia, Macau, Nepal, Georgia, Bangladesh, Bhutan, Tajikistan, India, Armenia, Pakistan, Kazakhstan, Kyrgyzstan, Turkmenistan, Uzbekistan, Maldives, Sri Lanka, Afghanistan, Azerbaijan Republic, Mongolia, Lebanon, Jordan, Yemen, Oman, Iraq, Saint Lucia, Guadeloupe, Grenada, Turks and Caicos Islands, Antigua and Barbuda, Martinique, Anguilla, Netherlands Antilles, Nicaragua, Virgin Islands (U.S.), Saint Vincent and the Grenadines, British Virgin Islands, Bahamas, Dominica, Belize, Montserrat, Barbados, Puerto Rico, Haiti, Aruba, Cayman Islands, Saint Kitts-Nevis, French Polynesia, New Caledonia, American Samoa, Palau, Marshall Islands, Wallis and Futuna, Micronesia, Papua New Guinea, Cook Islands, Vanuatu, Guam, Fiji, Kiribati, Nauru, Tonga, Tuvalu, Niue, Solomon Islands, Western Samoa
Domestic handling time
Will usually ship within 1 business day of receiving cleared payment - opens in a new window or tab.

Return policy

Item must be returned within
Refund will be given as
14 days after the buyer receives it
Money back or item exchange (buyer's choice)
The buyer is responsible for return shipping costs.
Return policy details
Return Policy: Items may be returned for refund or replacement within 14 days of purchase provided they are returned unused and undamaged in the original box or packaging and with all the original manuals and accessories. Shipping fees are not refundable, however, defective items may be returned for replacement and seller will pay shipping charges to send the replacement. If replacement is not possible, a refund will be given. Since shipping damage can also result in a refund being declined, be sure you package the item well when returning it. Use bubble wrap to secure items in boxes and ESD protection for electronic parts sensitive to ESD. To get a Full Refund, buyer also needs to confirm purchase cancelation with eBay before a refund will be given. If buyer does not confirm purchase cancelation with eBay, seller's eBay Final Value Fees will be deducted from the refund given.

Payment details

Payment method Preferred/Accepted  
Credit card or Pre-authorized Debit through PayPal
PayPal Preferred

Seller's payment instructions

Make sure your PayPal address on record is up to date. Purchases will be shipped to that address unless instructed otherwise. If making multiple purchases, please request an invoice so that shipping can be combined. We reply promptly to all customer emails, so if you have not gotten a response from us within 24 hours, please make sure your spam blocker, or your ISP's spam filter have not mistakenly blocked our email.
time left
Current bid amount
Shipping amount
Bid Count
time left
current bid
Current bid amount Approximately:
Shipping amount Approximately:
Import charges:
Import charges:
(estimated and based on max bid)
Your bid amount


Your current max bid:
Increase your chances of winning by setting a higher bid now.
Let eBay place automatic bids for you  This opens a help overlay dialogue about automatic bidding.
How does automatic bidding work?
As other bids come in, eBay will automatically raise your bid in small amounts, up to your limit. Learn More. - opens in a new window or tab
Close button. This closes the help overlay dialogue.
, up to
By submitting your bid, you'll be committing to buy this item from the seller if you are the winning bidder.
By submitting your bid, you are committing to buy this item from the seller if you are the winning bidder. You have read and agree to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase you maximum bid amount.
By clicking Confirm, you commit to buy this item from the seller if you are the winning bidder.
By clicking Confirm, you are committing to buy this item from the seller if you are the winning bidder and have read and agree to the Global Shipping Program terms and conditions - opens in a new window or tab. Import charges previously quoted are subject to change if you increase your maximum bid amount.
Tell us what you think 
We've made a few changes to bidding.
Were these helpful?
Bid layer is updating the contents.
Resume bidding, if the page does not update immediately.
FREE shipping
See item description
+ See item description for shipping
(Enter ##1## or more)
(Enter more than ##1##)
Your max bid:
You've been outbid. Don't let it get away - place another bid.
You've been outbid by an automatic bid placed earlier by another bidder.
You're the highest bidder on this item!
You're the first bidder on this item!
You're the highest bidder on this item, but you're close to being outbid.
This auction is almost over and you're currently the high bidder.
You're the high bidder on this item, but the reserve price hasn't been met yet.
You've been outbid by someone else.
You can still win! Try bidding again.
You've been outbid by someone else's max bid.
You can still win! Try bidding again.
Your bid wasn't accepted because it's the same as someone else's bid.
Try raising your max bid.
You're the highest bidder!
To increase your chances of winning, try raising your bid.
You're the first bidder. Good Luck!
You're still the highest bidder!
You increased your max bid to
Please enter your bid again.
Enter a valid amount for your bid.
Enter a bid that is the minimum bid amount or higher.
You have to bid at least
Sorry, you can't lower your maximum bid once it's placed.
This seller requires the buyer to have a PayPal account to purchase this item. Get a PayPal account here .
Your bid is the same as or more than the Buy It Now price. You can save time and money by buying it now.
Place bid
Review and confirm your bid
Bid confirmation
Increase max bid
Enter a custom max bid more than ##2##
Enter a custom max bid of ##2## or more
+ ##2## approximate import charges
##2## (approximately)
Please enter a higher amount than the current bid.
+ ##2## for shipping
Bid ##3## now
Bid ##3##
Time left:
Current bid:
(approximately ##1##)
Your maximum bid:
(approximately ##1##)
Increase your maximum bid:
By clicking 1 Click Bid, you commit to buy this item from the seller if you're the winning bidder. Learn moreabout 1-click bid - opens in a new window or tab
(approximately ##1##)
Winning bid:
Starting bid:
Congrats! The auction has ended and you're the winner.
The auction has ended, but the reserve price was not met.
Sorry, the auction has ended and you were outbid.
Good news, you're the high bidder.
Sorry, you've been outbid.
You're the high bidder, but the reserve price is not met.
Please enter a higher amount than the current bid.
Maximum bids cannot be lowered once submitted.
Please enter a valid number.