SauronBuy
Wireless photocell

Sauron

Sees every millisecond.

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€499 per photocell, or in the kit with AthLink

The Sauron photocell next to its box

An invisible beam. Fifteen metres. One millisecond.

Sauron casts an infrared barrier across the track. When the athlete breaks it, the time is logged and sent over radio to AthLink.

Sauron by the numbers.

0.001 stiming resolution
15 mbeam with reflector
2.5 kmradio range in open field*
10 hbattery life
6RGB status LEDs
0cables between photocells

Everything you need, inside.

Infrared barrier850 nm beam modulated at 38 kHz, immune to sunlight and artificial light.
GPS + BeiDouEvery time carries an absolute timestamp, synced to the microsecond.
LoRa radioUp to 2.5 km to AthLink. Pairs automatically.
Status at a glance6 RGB LEDs for battery and GPS, a beep on every pass.
On a tripodStandard 1/4" mount. Indoors and outdoors, zero calibration.
App controlBeam on/off, role, status and shutdown remotely.
Start and finish

Two photocells. One complete run.

Put one Sauron on the start line and one on the finish: AthLink works out the time and brings it to your phone. No cable between them.

Two Sauron photocells up close
How it works

From finish line to phone. In an instant.

SauronstartSauronfinishLoRa 433 MHzAthLinkreceives, stores, relaysBluetoothSession · 60 m–secondsLIVESauronstartSauronfinishLoRa 433 MHzAthLinkreceives, stores, relaysBluetoothSession · 60 m–secondsLIVE
  1. 01Sauron detects the pass.The beam breaks and the time is logged to the millisecond.
  2. 02AthLink receives it over radio.LoRa at 433 MHz, up to 2.5 km in open field.
  3. 03You read it on your phone.Bluetooth connection to AthLink: no router, no network.

How many you need.

Start with two. Add intermediate photocells whenever you like, up to 8 devices per AthLink.

2 × SauronStart and finishThe time of the run.
3 × SauronWith one intermediateTotal and split time.
4 × SauronWith more intermediatesSegments, speed, analysis.

Tech specs

Timing
0.001 s resolutionGPS-synced absolute timestampFalse-trigger filtering
Infrared barrier
850 nm IR beam modulated at 38 kHzUp to 15 m with reflectorImmune to sunlight and artificial light
Connectivity
LoRa 433 MHz up to 2.5 km*Automatic pairing with AthLinkUp to 8 devices per AthLink
GPS
GPS + BeiDou receiverMicrosecond synchronisationPosition on the in-app map
Battery
3500 mAh Li-ionUp to 10 hours of useUSB-C, charges in about 2 hours
Indicators
6 RGB status LEDsBattery and GPS at a glanceBeep on every pass
Remote control
IR beam on/off from the appRemote status and shutdownStart, intermediate and finish roles
Size
About 152 × 100 × 72 mm1/4" tripod mountIndoor and outdoor use
Timing
0.001 s resolutionGPS-synced absolute timestampFalse-trigger filtering
Infrared barrier
850 nm IR beam modulated at 38 kHzUp to 15 m with reflectorImmune to sunlight and artificial light
Connectivity
LoRa 433 MHz up to 2.5 km*Automatic pairing with AthLinkUp to 8 devices per AthLink
GPS
GPS + BeiDou receiverMicrosecond synchronisationPosition on the in-app map
Battery
3500 mAh Li-ionUp to 10 hours of useUSB-C, charges in about 2 hours
Indicators
6 RGB status LEDsBattery and GPS at a glanceBeep on every pass
Remote control
IR beam on/off from the appRemote status and shutdownStart, intermediate and finish roles
Size
About 152 × 100 × 72 mm1/4" tripod mountIndoor and outdoor use
Discover AthLink ›

Choose how to start.

Sauron photocell
SauronOne photocell. To add an intermediate or replace a unit.
€499 Buy
The Athlense kit: AthLink and two Sauron photocells
RecommendedAthlense KitAthLink + 2 Sauron photocells. Everything you need to time start and finish.
€1,199 · save €128Buy the kit

Prices include VAT.

Frequently asked questions

All answers in Support ›
Is the price for one photocell or a pair?

€499 is the price of a single photocell. Start and finish need two: the Athlense kit includes AthLink and two Sauron for €1,199.

Do I need AthLink?

Yes: AthLink receives the times from the photocells over radio and sends them to your phone.

Does it work outdoors in the sun?

Yes. The infrared beam is modulated at 38 kHz precisely so that sunlight and artificial light don't disturb it.

How far apart can start and finish be?

Each photocell talks to AthLink over LoRa up to 2.5 km in open field. Each Sauron's beam covers up to 15 m with a reflector.

Sauron.

The finish line, finally precise.

Buy from €499

* Range measured in open field with no obstacles; it may vary with the environment.

Battery life and charging time depend on use and environmental conditions.