MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder

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MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
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This is the MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder. In R/C racing, details matter. The slightest change or modification can be the difference between making the box, or being a back marker. So MYLAPS developed the next generation RC4 3-Wire transponder to do more than just count your laps. The RC4 3-Wire provides the user with telemetry data such as lap times, connected voltage and ambient car temperature, information that can be used to shave seconds off your overall times. RC4 transponders are compatible with RC4 timing systems can be used for both indoor and outdoor on-road and off-road racing and will perform on just about any surface.

The Standard in RC Timing!
Each transponder comes with a unique number linking your car to you as its driver. You can get more than one transponder with the same personal number, or even pick your own lucky number. Note: Car ID & Custom RC4 transponders are individually made and delivery could take up to 4 weeks.

How Does it Work?
The system picks up the signal sent out by the transponder mounted on your car. This signal is analyzed and lap times are measured. The system knows exactly which lap you are on and what your position is. If the track has the system hooked up to an internet connection, the data is passed on and published to your personal MYLAPS account. When you drive on a track with a MYLAPS RC4 timing system installed, your account will also show you information about the connected voltage and ambient car temperature.

Your Personal Data
Your training and event results are uploaded by the track's system or race officials. You can check, analyze and share your performance data on your personal account online. Simply create a personal account and register your transponder.

Easy to Set Up & Maintain
It is easy to get your transponder in and out of your car using the holder that comes with your RC4 package. The holder should be installed at a maximum height of 15 cm (6 inches) above the ground. Transponders need to survive the heat of battle. RC4 transponders are shock and mud-proof and can be used safely for both indoor and outdoor racing. They can even be used for model boat racing. Because they connect to your car’s power output, you don’t have to worry about recharging them. If you use your transponder a lot, it can get dirty over time. Use a soft brush and some lukewarm water to clean it.

Max Speed: 120 km/h (75 mph)
Temperature Range: 0 - 50°C (32 - 122°F)
Dimensions: 16x19x6mm (0.7x0.8x0.2")
Weight (Including Holder): 4.7g
Operating Voltage: 3.0 - 16 VDC
Humidity: Max. 90% relative
Signal Transfer: Magnetic induction
Code Resolution: 1.5 ms
Power: Feed from free receiver channel (ch3 or batt)
Connection Plug: Connect using a standard Servo plug
Power Consumption: 14mA @ 6 VDC
Wire Insulation: Aerospace/MIL-spec high-temp PTFE (Gasoline/Nitro resistant)
Quick Change Holder: Yes
Compatible With: RC4 Timing System only!

  • (1) RC4 "3-Wire" Personal Transponder
  • (1) Extra connection cable
  • (1) Holder
  • (1) MYLAPS sticker

NOTE: See image below for a list of transponders and compatible MYLAPS decoders. Be sure to check with your local track for transponder/system compatibility.

This product was added to our catalog on May 30, 2013

Verified Owner
Tuesday, Mar 25 2014 (about 8 years ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
Fantastic little transponder. Small, light, great quality & reliable. Works great. There's good reason it is the industry standard.
Wednesday, Aug 14 2013 (about 9 years ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
To the one star reviewers: No offence, but there is a time when things need to move forward and then it is not at any time possible to have everything to be compatible with older systems or to be back-compatible also. So I have to say the one star is not fair at all as this should be reviews for the product it self and not for what it can do on older systems or not.

My review is 5 star because:
Can take up to 16V, direct to 3S batteries or higher, no problem!
And not at least the specs tell you: "RC4 Timing System only" so everything is explained before purchase ;)
Verified Owner
Thursday, Feb 20 2014 (about 8 years ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
I does everything it says it should. If you buy befor looking into the compatibility of it with your decoder, it is not the falt of the transponder.
Wednesday, Aug 21 2013 (about 8 years ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
Good transponder, when I can use it.

I agree, things should move forward and improve. But the update to the firmware that makes the clones obsolete isn't moving forward. Mylaps chose to make it so that the clones didn't work. There were no hardware changes to make it so it was unable to pick up different transponders, just programming to make it so you'd have to buy a new transponder to work on the new systems. It would have been as easy (and probably easier) to just add the new pt coding to the timing systems and have all current transponders using the still supported frequencies work fine. But Mylaps wants to upgrade that system and make it so you HAVE to buy their product (until the new ones are cloned). Making it so the early adopters are not able to use lap timing on an older system/ have to buy an older and probably not as good transponder, or forcing everyone to upgrade for no other reason than to cut out other manufacturers products is not a step forward. Why not let racers have the choice to use the newer or the older styles, with the unique pros and cons they have. The hobby is already expensive enough without having to add another transponder to the mix so I don't show up to a race somewhere and not be able to be counted. My two cents.
Friday, May 31 2013 (about 9 years ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
Does not work with AMB decoders with older firmware. Updating the firmware to support the three wire MyLaps causes the decoder to no longer read MRT transponders, so some tracks will be reluctant to upgrade (mine included.) It's a good way for MyLaps to make the clones obsolete, but hurts track business. Get the 2-wire AIT10R078 MyLaps RC4 HYBRID instead, that will work with ANY AMB timing system that will read PT's. Yes, it's $20 more, but will work on any AMB system guaranteed (Post AMB20 house only of course.)
Monday, Mar 28 2022 (5 months ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
well have to say was going to buy a transponder? getting back into the sport? BUT!!
seems mylaps is going for the "Extortion" thing i was told? if i buy one? i still have to send it in to be "Upgraded"?
for another 60.00?? WTF???
no wonder rock crawling and bashers type stuff so popular?? its expensive as it is?
heard the Chinese one will be available soon, to run on the Extortion systems from Mylaps
figure wait? dont care bout getting counted, just wanna race.
Thursday, Nov 14 2013 (about 8 years ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
Great transponder. ...its time to upgrade....a lot of tracks are updating there systems so look forward to seeing more ppl converting to this
Verified Owner
Tuesday, Jun 7 2022 (2 months ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
Great Transponder, its really light and fits in my 2 and 4wd buggies, definitely recommend!!
Verified Owner
Sunday, Oct 31 2021 (9 months ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
First time I've purchased a transponder and I am not disappointed. Works as advertised and doesn't take up much space in the car at all.
Verified Owner
Wednesday, Dec 9 2020 (about a year ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
Works great! Mount is very convenient and is easy to place almost anywhere. Have never had any problems with any MyLaps transponder.
Verified Owner
Thursday, Mar 26 2020 (about 2 years ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
Bought in 2013 and reviewing in 2020.

Still works! small.. easy to mount.
Verified Owner
Saturday, Jun 22 2019 (about 3 years ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
product is good as expected, installed in car ready to go race.
Verified Owner
Monday, Aug 6 2018 (about 4 years ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
Excellent Transponder which works well, durable and does what it is suppose to do. I have yet to take it out of my car ever since I installed it even with full cleaning on my kit. Two thumbs up for this device
Monday, Jul 1 2013 (about 9 years ago)
MYLAPS RC4 "3-Wire" Direct Powered Personal Transponder
Is not backwards compatible with the RC3 system where the RC4 hybrids work. There was a few people at my local track that had to be hand counted because they bought new transponders and they didnt work with the system. MAKE SURE YOU BUY THE RC4 "HYBRID" TRANSPONDER and not this one. Im going to try and return all of mine and tell everyone else to return theirs..