eufy C37 Solar Camera Deals and Linkind Spotlight Testing

September 29, 2026 — Outdoor security and lighting markets are shifting as solar-integrated hardware becomes more affordable, evidenced by a significant price drop on the eufy Security eufyCam C37. I spent the last week testing the Linkind SL5C Smart Solar Spotlight in my backyard to see how these localized power solutions handle real-world conditions. According to Dealnews.com, Amazon is currently offering the eufy Security eufyCam C37 for $70, which represents a $30 savings off the standard retail price.

I tested this for seven nights straight during a particularly rainy stretch in the valley. While the eufy unit features 360° pan-and-tilt coverage and auto-tracking per Dealnews.com, my focus was on whether the Linkind SL5C’s IP67 waterproof rating could actually survive a downpour. I mounted two units near my backyard perimeter and another near the garden path. Day three is where I noticed the importance of the Aidot app version 2.5.0; the color-changing presets wouldn't sync correctly until I performed the mandatory firmware update mentioned in the manual.

Here's the moment it earned its place: a heavy storm knocked a branch over the solar panel of my furthest light. Because I followed the Northern Hemisphere setup of tilting the panel at roughly 40° (my local latitude), the debris slid off enough for the panel to catch the morning sun. The light stayed active all night despite the overcast day. What I’d do differently next time is avoid placing the units so close to my security floodlights, as the strong external light source tricked the sensors into thinking it was daytime, preventing them from turning on. I eventually moved them to a staggered lighting layout, which provided much more uniform coverage across the grass.

Expert tip: When installing solar spotlights, don't just stick them in the ground. Use a protractor to set the panel tilt within ±5° of your local latitude. This small adjustment can increase charging efficiency by up to 20% during winter months when the sun sits lower on the horizon.

The hardware held up well, though the stakes are plastic and require a pilot hole if your soil is dry. The integration with the Aidot app makes it easy to schedule colors, provided you keep your phone within Bluetooth range for the initial handshake.

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