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Remote Control Key FOB & Receiver Board, 4 Channel

Remote Control Key FOB & Receiver Board, 4 Channel

32197-large.jpg 
Stock No: 32197 MI
 Review Average:  
 Number of Reviews: 2
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$8.95


Availibilty: In Stock   Units: 128
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 Detailed Description
4 function Remote Control Key FOB & Receiver board. Approxmately100ft. range. Pressing one of the buttons causes "Transmit" LED to light & transmission of multi bit Tri-State address code bits and data bits coressponding to the button pressed. You set the address code by jumpers on both Transmitter & the Receiver board. Received signal causes: "Valid ID" output on the receiver board and the corresponding “Data” pin to go high.
Power: Transmitter FOB:12V camera battery.
Receiver: 5VDC <5ma
Frequency: 315MHz (~250-450MHz)
Outputs: Non-Latching, TTL Compatible,
High Active (Io>3mA Current Source)
Antenna: Transmitter: 65mm telescoping.
Receiver: Requires 24cm Wire (Not supplied)
I/O Pins: 7 Pin, 0.1” Pitch Header.
NOTE: Factory default is both FOB & Receiver Address Bits are Floating (F), So all receivers will respond to all FOBs. To set unique addresses, you jumper BOTH FOB & Receiver address pins with the SAME “1”, “0” & “F” combinations.
L: 1-5/8” W: 15/16” (Board) T: 5/16”
H: 2-1/2” W: 1-1/2” (FOB) T: 5/16”
WT: .1


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 Product ReviewsClick here to review this item
Inexpensive, simple to connect, works fine
As the previous reviewer states, its got an active high output, so youll need some transistors and resistors to reverse, and it isnt the most secure device, but its cheap, easy to interface, and its probably going to last years. Definately worth the paid price.
Chuck
 
Works as expected
These arent terribly secure. They offer 3^8 possible codes, about 6500, or Id give them a higher score. But they are easy to use. My garage door opener radio went out, and Im using one of these until I get it fixed. I had to extend the antenna on the transmitter to get it to work more than 25 feet or so from the receiver, havent tried to determine the maximum range. Frequency was measured as around 312MHz on one transmitter and 313MHz on another but both worked with the same receiver, so the receivers are pretty wide. Use a fine-point soldering iron to set the code if you decide to change from the default, but its not hard. I needed the outputs to be active-low for a relay board. So I hooked the active-high outputs up to some NPN transistor bases through 4.7K resistors. The Valid output is connected to a transistor in series with all the others, its emitter to ground, its collector is the ground for the others, so the Valid must be high before the others are trusted -- just in case the outputs ever produce false positives on noise. Thats something Ive seen with other similar chips, not sure it its necessary but it was easy. Then one per other output, with the collectors having a 4.7K pullup to +5 and a connection to my relay board inputs. Works like a champ, ordering a few more as spares.
- Steve, FL
 




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