Overview
The MYLAPS RC4 3-Wire Direct Powered Personal Transponder is the next-generation RC racing transponder built for serious competitors who want more than just lap counts. In addition to industry-leading lap-timing accuracy, the RC4 3-Wire delivers real-time telemetry — including connected voltage and ambient car temperature — so you can fine-tune setups and shave seconds off your fastest laps.
Designed for both on-road and off-road RC racing, the 3-Wire connects via a standard servo plug to a free receiver channel, drawing power directly from your vehicle. Combined with shock-proof, mud-proof construction and seamless MYLAPS account integration, it's the data-driven choice for racers chasing the podium.
Key Features
- 3-wire direct-powered personal transponder with telemetry support
- Records lap times, connected voltage, and ambient car temperature
- Quick-change holder for fast transponder swaps between cars
- Shock-proof and mud-proof construction for indoor and outdoor racing
- Aerospace/MIL-spec high-temp PTFE wire insulation (gas/nitro resistant)
- Standard servo plug — connects to a free receiver channel
- Unique personal driver number with online MYLAPS account integration
Performance Benefits
- Telemetry data exposes battery sag and heat patterns that affect lap times
- Direct vehicle power means no batteries to charge or replace on race day
- Reliable signal capture on carpet, asphalt, clay, dirt, and astroturf
- Quick-change holder lets you run one transponder across a multi-class fleet
- Personal MYLAPS account stores results for trend analysis and progress tracking
Usage Notes
Best Used With RC Scales: 1/8, 1/10, and 1/12 scale electric and nitro RC cars, trucks, buggies, truggies, on-road touring cars, short course trucks, oval cars, and RC model boats.
- Compatible only with MYLAPS RC4 timing systems (not backward compatible with RC2/RC3)
- Mount transponder holder at a maximum height of 15 cm (6 in) above the ground
- Connect to a free receiver channel (typically CH3 or battery channel) using the standard servo plug
- Custom transponder numbers and Car ID options may require additional lead time
- Clean periodically with a soft brush and lukewarm water
Technical Specs
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Max Speed: 120 km/h (75 mph)
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Operating Temperature: 0–50 °C (32–122 °F)
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Dimensions: 16 × 19 × 6 mm (0.7 × 0.8 × 0.2 in)
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Weight (incl. holder): 4.7 g
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Operating Voltage: 3.0–16 V DC
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Humidity: Up to 90% relative
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Signal Transfer: Magnetic induction
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Code Resolution: 1.5 ms
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Power Consumption: 14 mA @ 6 V DC
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Connection: Standard servo plug (free receiver channel — CH3 or battery)
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Wire Insulation: Aerospace/MIL-spec high-temp PTFE (gasoline/nitro resistant)
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Quick-Change Holder: Yes
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Compatibility: MYLAPS RC4 timing systems only
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Telemetry Data: Lap times, connected voltage, ambient car temperature
Fitment
Compatible RC vehicles: The RC4 3-Wire transponder is compatible.
The RC4 3-Wire transponder is compatible with virtually all RC vehicles running on tracks equipped with MYLAPS RC4 timing systems:
- 1/8 scale nitro and electric buggies, truggies, on-road, and rally
- 1/10 scale touring cars, buggies, stadium trucks, short course trucks, oval cars
- 1/12 scale on-road pan cars
- Rock crawlers and scale trail trucks
- RC model boats
- Any RC vehicle with a free receiver channel and a MYLAPS RC4-equipped track
What's Included
- (1) MYLAPS RC4 3-Wire Direct Powered Personal Transponder
- (1) Extra connection cable
- (1) Quick-change transponder holder
- (1) MYLAPS sticker
Summary
The MYLAPS RC4 3-Wire Personal Transponder is the data-driven choice for competitive RC racers running on RC4-equipped tracks. With built-in telemetry, direct receiver power, and a rugged shock-proof design, it delivers the timing accuracy MYLAPS is known for — plus the performance insight you need to win.
