How the Protern Live Sensor works

An athlete crosses the finish. Before they stop or reach the lift line, the run is on your phone.

Timing splits, speed, acceleration, line. About a second after the finish.

This is the Protern Live Sensor. It sends each run to your phone while the athlete is on course. Video gets overlays the moment it's uploaded, so an athlete can watch their run on the lift ride up.

The rest of Protern works the way it always has. This is added on top.

Richer feedback, now on the lift ride up

Protern has always shown you more than a timing system can. Splits at every terrain and rhythm change, not just a finish and one intermediate. A run analysis function that can zoom into a ten-metre section on the steep, without needing a split set there. Speed and acceleration through every turn.

A timing system gives you splits where it has eyes. Protern gives you splits wherever they make sense, and section-level analysis on top.

What's new is when this arrives. With the Live Sensor, all of it is on your phone before the athlete reaches the lift line. Splits, speed, acceleration, section-level detail, line. While the run is still fresh in their legs and mind.

No gates to set up. No wires. No extra batteries. The sensor the athlete is already wearing does the timing.

A training day

The end-of-day chase is gone.

No more collecting sensors from athletes. No more reminding them to sync before they head home. The athlete charges the sensor overnight. Nothing to hand over. Nothing to sync.

During training, for every run:

• The run time is on your phone in about a second
• Splits, speed, acceleration, and line are there with it
• Video and overlays are ready by the time the athlete is back at the lift

Connects on its own

No SIM card. No roaming fees. No settings to change. Turn the sensor on and it works, in over 100 countries.

The sensor uses a mobile connection built for sending small amounts of data. It does not carry phone calls or video. Because it sends very little, it needs less signal than a phone. On the hill, the sensor will often keep working where your phone loses service.

What hasn't moved

Everything you already use in Protern keeps working the way it always has:

• Comparing runs
• Overlays on video
• Multi-angle review
• Uploading by Bluetooth or USB when offline

Connectivity is optional. A Live Sensor with no connectivity plan works the same as the current Protern Sensor.

The sensor

Size. About the same size as a granola bar, and about as thick as a deck of cards. It sits flat in the new Protern Bib and does not catch on gates or jackets.

Weight. 76 grams.

Battery. A full training day on one charge. Almost 10 hours with connectivity on. Up to 20 hours offline.

Storage. Over 280 hours of recording on the sensor itself. A full season of offline data fits before anything needs uploading.

Accuracy. Timing accuracy between 0.02 and 0.03 seconds. Speed accuracy 0.18 km/h. The same 10-times-per-second data rate as the current sensor.

For the full spec list, see the Protern Live Sensor page.

The new bib

The Live Sensor uses a new Protern Bib. The shape is different, so the old bib does not fit the new sensor, and the new bib does not fit the old sensor.

Every Live Sensor ships with a new bib. You do not need to order one separately.

Your existing Protern Bibs still work with your current sensors. Teams can use both side by side, and add new bibs only for the sensors they upgrade.

Replacement bibs in all sizes are available for athletes who outgrow or lose one.

Connectivity plans

Connectivity plans line up with your Protern Pass:

• Season+ to match a Season+ Pass.
• Season to match a Season Pass.
• Monthly if you want the flexibility of one month at a time.

Each term comes in three plans. Live 20 has 20 Live hours a month, for when you need them. Live 50 has 50 Live hours a month, enough for almost every athlete. Live 80 has 80 Live hours a month, for athletes who train most days. A Live hour is one hour of recording your sensor sends over the mobile network.

Team pool. When two or more Season or Season+ plans are paid for together, every athlete's Live hours go into one team pool. Coaches can set a limit for any athlete so one person cannot use up the pool.

Live hours for heavy months. Training camp or heavy block coming up? Keep top-up hours in reserve: they carry over from month to month and don't expire while you have a connectivity plan. Your plan's Live hours are used first, then your top-up hours. You can also upgrade your plan from the Sensors page, or turn on pay as you go at $0.75 USD an extra Live hour, up to a weekly budget you set. With none of these, connectivity turns off until your Live hours reset on the 1st, and your sensor keeps recording.

No plan. The sensor still records everything. You sync over Bluetooth or USB when you are ready, the same way the current sensor works.

For plan details and current pricing, see the Live connectivity page.

Where to get it

Upgrade to the Protern Sensor (Live), or start fresh with the Protern Pack with the Live Sensor.