The Garmin Varia eRTL615 (e-bike Varia) is the first (that we know of) designed specifically for e-bike use.
Garmin Varia RCT715 - It sees what you can't. Varia RCT715 rearview radar with camera and tail light continuously records your ride and automatically saves footage before, during and after events if it detects an incident. The bright tail light makes you more visible to motorists. And Varia RCT715 integrates seamlessly with your Garmin bike computer or the Varia mobile app on your paired compatible smartphone to alert you to traffic as you ride.
Garmin Varia RCT715 - Tail Light/Radar/Camera
Garmin Varia eRTL615 eBike Rearview Battery-Free Radar with Wearable4U E-Bank Bundle : Electronics
First Impressions: Garmin Varia RCT715 radar with camera - Bikerumor
IN THE BOX: 1x Garmin Varia eRTL615 (direct rack mount), 1x 2-bolt to friction flange mount adapter, 1x seat rail mounting kit, 1x Wearable4U E-Bank,
Garmin Varia eRTL615 eBike Rearview Battery-Free Radar with Wearable4U E-Bank Bundle
Garmin Varia Bike Radar System In-Depth Review
First Impressions: Garmin Varia RCT715 radar with camera - Bikerumor
Hands on with Garmin's new Varia bike radar and smart light system
Commuter - Page 2 of 116 - Bikerumor
Garmin Varia RCT715 - It sees what you can't. Varia RCT715 rearview radar with camera and tail light continuously records your ride and automatically saves footage before, during and after events if it detects an incident. The bright tail light makes you more visible to motorists. And Varia RCT715 integrates seamlessly with your Garmin bike computer or the Varia mobile app on your paired compatible smartphone to alert you to traffic as you ride.
Garmin Varia RCT715 - Tail Light/Radar/Camera
eBike - Page 4 of 31 - Bikerumor
Commuter - Page 2 of 116 - Bikerumor
Garmin releases e-bike specific Varia rearview radar and tail light - BikeBiz