Garmin RTL515 RTL516 Varia Rearview Radar
Introduction
The device can improve situational awareness. It is not a replacement for cyclists’ attentiveness and good judgment. Always maintain awareness of your surroundings and safely operate the bicycle. Failure to do so could result in serious injury or death. Always consult your physician before you begin or modify any exercise program.
Getting Started
You can use the Varia Rearview Radar RTL515/RTL516 with your compatible Garmin® device, a smartphone, or the Varia RDU (radar display unit). This list provides an overview of the installation and setup tasks.
- Charge the device (Charging the Device, page 5).
- Install the universal mount (Installing the Universal Mount, page 1).
- If you are using an Edge® 1030 device, pair the devices (The Varia RTL515/RTL516 and your Edge 1030, page 2).
- If you are using your smartphone, download the Garmin Varia app to your smartphone, and pair the devices (The Varia RTL515/RTL516 and the Varia App, page 3).
If you are using the Varia RDU, pair the devices (The Varia RTL515/RTL516 and your Radar Display Unit, page 4).
- If you are using another Garmin device, pair the devices (Other Compatible Devices, page 4).
Tips for Installing the Device
The Varia Rearview Radar RTL515/RTL516 device includes a taillight and micro radar that can detect approaching vehicles up to 140 meters away.
- Select a secure location to mount the device where it does not interfere with the safe operation of your bike.
- Mount the device as high on the seat post as possible for optimal light visibility and radar detection.
NOTE
The mounting surface should be vertical. The mounts are designed to accommodate most seat post angles.
- Mount the Varia RTL515/RTL516 device on the seat post 250 mm to 1200 mm above the road.
- Install the device correctly.
The device faces backward and is perpendicular to the road
- Make sure there are no obstructions in front of the light.
- Go for a test ride during the day in a safe environment.
- Select a rubber pad based on your seat post shape, and place the rubber pad on the back of the universal mount.
- Place the universal mount on the seat post.
- Attach the universal mount securely using one band.
- Align the tabs on the back of the device with the universal mount notches
- Press down slightly and turn the device clockwise until it locks into place.
Device Overview
| Device key | Press to change light modes.
Hold for 1 second to turn the device on and enter active mode. Hold for 2 seconds to turn the device off. Hold for 8 seconds to reset the device. |
| Status LED | Changes color based on the battery level, pairing status, and charging status. (Varia RTL515/RTL516 Status LED, page 1) |
Varia RTL515/RTL516 Status LED
| LED State | Status |
| Flashing purple | The device is in active pairing mode. |
| Flashing blue | The device is in smart mode and can be controlled by a paired Varia RDU or compatible Garmin device. |
| Flashing green | The device is charging. |
| Solid green | The device is fully charged. |
| Flashing red | The device has approximately 60 or fewer minutes of battery life remaining. |
| Solid red | An error occurred. You may need to restart the device. |
Taillight Modes
You can switch the Varia RTL515 light modes by pressing the device key.
| Mode | Light Intensity | Default Flash Behavior | Flash Behavior when Vehicle Approaches |
| Solid (default) | High | None | Light flashes |
| Peloton (group ride) | Moderate | None | Light flashes softly |
| Night Flash | High | Slow | Light flashes quickly |
| Day Flash | Maximum | Occasional | Light flashes quickly |
| Standby | None | None | The device does not detect vehicles. |
The Varia 516 has the solid mode only, and the light does not flash when a vehicle approaches. You can switch the device to standby mode by pressing the device key.
Turning Off the Taillight
Hold the device key for 2 seconds.
The Varia RTL515/RTL516 and Your Edge 1030
You can remotely control your radar device and customize settings using your compatible Edge device. This section contains instructions for the Edge 1030 device. Other compatible Edge devices contain similar settings and controls (Other Compatible Devices, page 4).
Pairing the Varia Radar Device
The first time you connect the Varia RTL515/RTL516 device to your Edge device, you must pair both devices. After the initial pairing, the Edge device automatically connects to the radar device when you start your activity,y and the radar device is active and within range.
Viewing Radar on Your Edge Device
Go for a ride.
The radar information appears on the active data screen.
The vehicle position LED moves up the column as a vehicle gets closer to your bike. The threat level LED changes color based on the potential level of threat. Green indicates no vehicle is detected. Amber indicates a vehicle is approaching. Red indicates a vehicle is advancing at a high rate of speed.
Tone Alerts for Approaching Vehicles
The Edge device beeps if audible tones are turned on in the settings. Your device has alert tones for several features. The alert tone for approaching vehicles has a unique sound. The device beeps one time when the first vehicle is detected. After the threat is cleared, the device beeps again when another vehicle is detected.
Viewing Widgets
Your device is preloaded with several widgets, and more are available when you pair your device with a smartphone or other compatible device.
- From the home screen, swipe down from the top of the screen.
The settings widget appears. A flashing icon means the device is searching for a signal. A solid icon means the signal was found or the sensor is connected. You can select any icon to change the settings.
- Swipe left or right to view more widgets. The next time you swipe down to view the widgets, the last widget you viewed appears.
Customizing the Varia Device Settings
Before you can customize Varia device settings with your Edge device, you must pair the devices.
- Select > Sensors > Lights.
- Select an option:
- Select Enable to enable the light network. The Varia RTL515/RTL516 and Your Edge 1030
- Select Network Options > Test Lights to verify that each light in your network is set up correctly (Testing the Light Network, page 3).
- Select a light to view device information and customize each light in your network (Light Network Settings, page 3).
Testing the Light Network
- From the Sensors menu, select Lights > Network Options > Test Lights.
- Select a light to test.
Light Network Settings
From the Sensors menu, select Lights, and select a paired light.
Enable: Turns on the light and allows you to control the light remotely with your Edge device. You can disable a light to disconnect it from the light network.
Light Mode: Sets the light intensity and pattern mode, or turns off the light.
Individual light mode setting (Light Mode Settings, page 3).
Software Update: Checks for software updates.
About: Displays device, software, and battery information.
Remove: Allows you to delete a paired light from the network.
Light Mode Settings
From the Sensors menu, select Lights > Network Options > Light Mode.
Auto: Automatically adjusts the light intensity and light mode based on the ambient light and time of day. This mode is recommended for commuting or road rides.
High Visibility: Sets the light intensity to flash mode or the brightest setting available.
Trail: Automatically adjusts the light intensity and light mode based on the ambient light and time of day. This mode is recommended for mountain biking.
Individual: Allows you to customize the light intensity and pattern mode for each light in your network (Light Network Settings, page 3).
Customizing the Radar Alert Settings
Before you can customize the radar alert settings with your Edge device, you must pair the devices.
You can customize how the radar alerts sound and display on your Edge device.
- From your Edge device, select > Sensors.
- Select your radar device.
- Select Sensor Details > Alert Settings.
- Select an option.
The Varia RTL515/RTL516 and the Varia App
The Varia app connects to your Varia radar device using Bluetooth® technology. The app displays radar information and enables you to view settings.
- After pairing, the app displays a colored banner indicating the threat level posed by approaching vehicles.
- You can enable smartphone vibration alerts so you can monitor those alerts while your smartphone is in your pocket, instead of mounted on the handlebars.
The Varia RTL515/RTL516 and the Varia App
- You can viewthe radar device battery details.
You can download the Varia app from the app store on your smartphone.
Pairing the Varia Radar Device with Your Smartphone
The first time you connect the Varia RTL515/RTL516 device to the Varia app, you must pair both devices. After the initial pairing, the Varia app automatically connects to the Varia RTL515/RTL516 when you open the app and the radar device is active and within range.
- Bring your smartphone within range (3 m) of the radar device.
- On your compatible smartphone, enable Bluetooth technology.
- From the app store on your smartphone, install and open the Varia app.
- Select Pair Now.
- While the Varia RTL515/RTL516 radar device is turned off, hold the device key for 2 seconds to enter pairing mode.
The status LED flashes purple, and the taillight turns on. The device is in pairing mode for 5 minutes or until you press the device key.
- Select That’s Mine.
When the radar device is paired with your smartphone, the app displays the current status.
Viewing Radar on the Varia App
Go for a ride. The radar information appears on the active data screen.
The vehicle position moves up the screen as the vehicle gets closer to your bike. The threat level banner changes color based on the potential level of threat. Green indicates no vehicle is detected. Amber indicates a vehicle is approaching. Red indicates a vehicle is advancing at a high rate of speed.
Customizing the Varia App Alert Settings
Before you can customize the radar alert settings with the Varia app, you must pair the devices.
- From the Varia app, select settings
- Select an option.
The Varia RTL515/RTL516 and Your Radar Display Unit
You can display radar data using the compatible rear display unit (RDU).
Varia RDU Device Overview
| Device key | Turns the device on and off. | |
| Ambient light sensor | Detects available light and automatically adjusts the brightness of the display. | |
| Connection status
LED |
Appears solid blue when the device is paired with the taillight. Flashes blue when the device is searching for the taillight. | |
| FRONT and REAR device status LEDs | Flashes red when the battery is low. Appears solid red when there is a device error. | |
| Threat level LED
Charging status LED (Charging the Device, page 5) |
Changes color based on the potential level of threat. Green indicates no vehicle is detected. Amber indicates a vehicle is approaching. Red indicates a vehicle is advancing at a high rate of speed. | |
| Vehicle position LEDs | Moves up the column as the vehicle gets closer to your bike. |
Installing the Varia RDU Device
- Please select a secure location to mount the device where it does not interfere with the safe operation of your bike.
- Place the rubber disk on the back of the bike mount. The rubber tabs align with the back of the bike mount,t so it stays in place.
- Place the bike mount on the bike stem.
- Attach the bike mount securely using the two bands
- Align the tabs on the back of the device with the bike mount notches.
- Press down slightly and turn the device clockwise until it locks into place.
Pairing the Radar Device with the RDU Device
The Varia RDU device can be paired with one radar device at a time.
- Hold the Varia RDU device key for 5 seconds.
- The threat level LED flashes purple.
- Turn on the radar unit.
- Bring the devices within 1 cm of each other, and wait while the devices connect.
- The Varia RDU LED turns solid blue,e and the threat level LED turns solid green.
- The Varia RTL515/RTL516 status LED flashes purple.
Turning On the Varia RDU Device
- Hold the device key for 1 second to turn the device on.
- The LEDs fill the column to indicate the battery level.
- The LED flashes blue while it is searching for the radar device.
Varia RDU Battery Status LED
When you turn on the device, the LED at the top of the column briefly indicates the battery status.
| LED Activity | Status |
| Flashing green | The device is charging. |
| Solid green | Charging is complete. |
| Flashing yellow | The battery is low. |
| Flashing red | The battery is critically low. |
Setting the Varia RDU Device Tones
- Press the device key to turn on tones.
- Press the device key again to turn off tones.
Turning Off the Varia RDU Device and Radar Device
- If the Varia RDU device is paired with the radar device, you can turn off both devices at the same time.
- Hold the device key on the Varia RDU device for 1 second.
Other Compatible Devices
Pairing the Radar Device with a Compatible Edge Device
This task is for the Edge 1030, 830, 530, and 130 devices. If your device is not listed, go to buy.garmin.com.
- Bring the Edge device within range (3 m) of the sensor.
- Turn on the Edge device.
- From the Sensors menu, select Add Sensor > Search All.
- While the Varia RTL515/RTL516 device is turned off, hold the device key for 2 seconds to enter pairing mode.
- Select your sensor.
When the sensor is paired with your Edge device, the radar and bike light status icons appear solid.
Pairing the Radar Device with a Compatible Garmin Watch
This task is for the Forerunner® 945, fēnix® 6 series, and vívoactive® 4 series watches. If your device is not listed, go to buy.garmin.com.
- Bring the watch within range (3 m) of the sensor.
- Turn on the Garmin watch.
- From the Settings menu, select Sensors > Add New > Search All.
- While the Varia RTL515/RTL516 device is turned off, hold the device key for 2 seconds to enter pairing mode.
- Select your sensor.
When the sensor is paired with your Garmin watch, the radar and bike light status icons appear solid.
Device Information
Charging the Device
The device is powered by a built-in lithium-ion battery that you can charge using a standard wall outlet or a USB port on your computer.
- Pull up the weather cap from the USB port
- Plug the small end of the USB cable into the USB port on the device.
- Plug the large end of the USB cable into an AC adapter or a computer USB port.
- Plug the AC adapter into a standard wall outlet.
- Charge the device completely.
- The status LED flashes green while charging.
- The status LED is solid green when charging is complete.
- Remove the USB cable, and close the weather cap.
Tips for Charging the Device
- Connect the charger securely to the device.
- Remove the charger from the device when the status LED is solid green.
- View the remaining battery life on your Edge 1030 settings widget (Viewing Widgets, page 2).
Device Care
- Avoid chemical cleaners, solvents, and insect repellents that can damage plastic components and finishes.
- Secure the weather cap tightly to prevent damage to the USB port.
- Avoid extreme shock and harsh treatment, because it can degrade the life of the product.
Cleaning the Device
- Clear mud and dirt from the weather cap area.
- While the weather cap is closed, hold the device under running water.
After cleaning, allow the device to dry completely.
Radar Detection
The device can improve situational awareness. It is not a replacement for cyclists’ attentiveness and good judgment. Always maintain awareness of your surroundings and safely operate the bicycle. Failure to do so could result in serious injury or death.
- The radar detects approaching vehicles up to 140 m away.
- The radar detects the speed of approaching vehicles from 10 to 160 km/h (from 6 to 99 mph).
NOTE: The radar does not detect vehicles traveling at the same speed as your bike.
- The radar beam width is 40 degrees. It provides radar coverage for typical bends in the road.
- The radar can detect up to eight approaching vehicles.
Specifications
Varia RTL515/RTL516 Specifications
| Battery type | Rechargeable, built-in lithium-ion battery |
| RTL515 battery life | Up to 6 hr. in solid mode
Up to 8 hr. in peloton mode Up to 6 hr. in night flash mode Up to 16 hr. in day flash mode Up to 3 mo. in standby mode |
| RTL516 battery life | Up to 9 hr. in solid mode
Up to 3 mo. in standby mode |
| Operating temperature range | From -20º to 50ºC (from -4º to 122ºF) |
| Charging temperature range | From 0º to 45ºC (from 32º to 113ºF) |
| Wireless frequencies | 2.4 GHz @ 0 dBm nominal; 24 GHz @ 13.6 dBm nominal |
| Water rating | IEC 60529 IPX7[1] |
| RTL515 LED luminous flux | 20 lm (solid mode)
8 lm (peloton mode) 29 lm (night flash mode) 65 lm (day flash mode) |
| RTL516 LED luminous flux | 5 lm (solid mode only)
Certified for use in Germany |
Varia RDU Specifications
| Battery type | Rechargeable, built-in lithium-ion battery |
| Battery life | Up to 10 hr., typical usage |
| Operating temperature range | From -20º to 60ºC (from -4º to 140ºF) |
| Charging temperature range | From 0º to 45ºC (from 32º to 113ºF) |
| Wireless frequency | 2.4 GHz ANT+ @ 0 dBm nominal |
| Water rating | IEC 60529 IPX71 |
Updating the Radar Software With Your Edge Device
Before you can update the Varia radar software, you must pair the radar device with your Edge device, you must have a Garmin Connect™ account, and you must pair the Edge device with a compatible smartphone.
- Bring the Edge device within 3 m (10 ft.) of the radar device.
- Sync your Edge device with the Garmin Connect app.
When new software is available, your device alerts you to update the software.
- Follow the on-screen instructions.
The taillight LED flashes blue and green to indicate the device is updating. When the update is complete, the LED flashes green 20 times.
Taillight Status LED for Software Updates
| LED Activity | Status |
| Flashing blue and green | The device is uploading software. |
| Flashing green | The software update is complete and successful. |
| Flashing red | The software update failed. |
Product Updates
This provides easy access to these services for Garmin devices:
- Software updates
- Product registration
Updating the Software Using the Garmin Express Application
Before you can update your device software, you Garmin RTL515 RTL516 Varia Rearview Radar must download the Garmin Express application.
- Connect the radar device to your computer using the USB cable.
Garmin Express looks for software updates automatically and sends them to your device. - Follow the on-screen instructions.
- Disconnect the device, and turn it on. The radar LED flashes blue and green to indicate the device is updating. When the update is complete, the LED flashes green 20 times.
The radar device is not responding.g
During a ride, if the radar device status LED Garmin RTL515 RTL516 Varia Rearview Radar is solid red, the device is in an error state.
- Make sure the device is within the approved operating temperature range (Varia RTL515/RTL516 Specifications, page 6).
- Turn the device off, and turn it back on.
You can check the battery level on the Sensors menu of your Edge device or on the Varia app.
- Avoid multiple sources of radar interference.
Radar detection does not work indoo.rs
The device is tuned to detect vehicles in a n Garmin RTL515 RTL516 Varia Rearview Radar outdoor setting. If you turn on the device indoors, a saturation alert can occur. When you take the device outdoors, it resumes normal operation.
The radar device does not turn on.
- Make sure the device is within the approved operating or charging temperature range (Varia RTL515/RTL516 Specifications, page 6).
- Charge the device for 4 hours (Charging the Device, page 5).
If the device does not turn on, disconnect the charger and charge for another 4 hours.
The status LED is flashing yellow
If the radar device status LED flashes yellow, the device is in demo mode. When the radar device is in demo mode, artificial data is generated for demonstration only.
To exit demo mode, select an option:
- Turn the device off, and turn it back on.
- Hold the device key for 8 seconds to reset the device.
The status LED turns red while charging
- Check the USB cable, connectors, and ports for damage.
- Make sure the power source is generating power.
You can check this in several ways. For example, you can check whether other devices powered by the source are functioning.
- Make sure the device is within the approved Garmin RTL515 RTL516 Varia Rearview Radar charging temperature range (Varia RTL515/RTL516 Specifications, page 6).
The radar device disconnects from the Edge device.
If the radar device is not connected or sending Garmin RTL515 RTL516 Varia Rearview Radar radar data, Garmin recommends that you stop riding and check the devices in a safe location. Failure to do so could result in serious injury or death.
- Turn both devices off, and turn them back on.
- Pair the devices (Pairing the Varia Radar Device with Your Edge 1030, page 2).
The Varia RTL515/RTL516 device sends light and radar data to the Edge device. The Edge device displays when connected.
The radar device disconnects from the Varia app.
If the radar device is not connected or sending radar data, Garmin recommends that you stop riding and check the device in a safe location. Failure to do so could result in serious injury or death.
- Turn off Bluetooth technology from your smartphone settings, and turn it back on.
- Turn both devices off, and turn them back on.
The Varia RTL515/RTL516 device sends light and radar data to the Varia app. The Varia app displays when connected.
The radar device disconnects from the Varia RDU device
If the radar device is not connected or sending radar data, Garmin recommends that you stop riding and check the dedevicen a safe location. Failure to do so could result in serious injury or death.
If the threat level LED is solid red and the Garmin RTL515 RTL516 Varia Rearview Radar REAR LED is off, the radar device is not connected to the Varia RDU device.
- Turn both devices off, and turn them back on.
You can check the battery level when you turn the devices back on.
- Pair the devices (Pairing the Radar Device with the RDU Device, page 4).
Replacement O-rings
Replacement bands (O-rings) are available for the mounts.
Customer Service
- Website: https://support.garmin.com/
- Ph: 00 886 2 2642 9199