Quick answer
Choose the eufy Wall Light Cam S4 for proactive radar-based detection and 4K clarity without a HomeBase, or the Floodlight Camera E340 for a brighter floodlight and 2K video with HomeBase 3 support.
Detection technology: Radar vs PIR
The Wall Light Cam S4 uses a 60 GHz mmWave radar that detects motion up to 12 meters with a 120° view, significantly reducing false alarms from swaying plants or small animals. The Floodlight Camera E340 relies on standard PIR (passive infrared) sensing, which is effective but more prone to thermal triggers.
Radar gives the S4 an edge in accuracy, but it also means the camera may be more sensitive to certain non-human movements in very open spaces. If your yard has minimal vegetation or pet activity, the E340's PIR is still reliable and simpler.
Video resolution and field of view
The S4 records in 4K (8 MP) with an f/1.6 wide aperture, delivering sharper details for identifying faces or license plates. The E340 offers 2K resolution, which is still clear but less detailed at longer ranges.
Both cameras provide wide coverage, but the S4's higher resolution is a clear advantage if you need to zoom in on footage. However, 4K video requires more bandwidth and storage—something to consider if your Wi-Fi network is older or if you plan to record continuously.
Lighting and deterrent features
The Wall Light Cam S4 integrates multi-level light and siren warnings that activate automatically upon radar detection, acting as a proactive deterrent. The Floodlight Camera E340 has a brighter, dedicated floodlight, making it better for illuminating large areas like driveways or backyards.
If your priority is scaring off intruders before they approach, the S4's combined light and siren is more effective. For pure illumination at night, the E340's stronger floodlight is the better choice.
Key trade-offs
- Detection accuracy: Wall Light Cam S4 uses 60 GHz mmWave radar for fewer false alarms; Floodlight E340 uses standard PIR which can be triggered by heat changes.
- Video quality: S4 offers 4K (8 MP) for sharper detail; E340 records in 2K, still good but less crisp for zooming. Choose S4 if you need to identify faces or plates from a distance.
- Lighting brightness: E340 has a brighter floodlight for large areas; S4 integrates multi-level light and siren for proactive deterrence. Pick E340 for maximum illumination; S4 for a combined deterrent effect.
- HomeBase compatibility: S4 works without a HomeBase (local storage on device); E340 supports HomeBase 3 for expanded recording and AI. If you already own a HomeBase 3, the E340 integrates seamlessly.
Product facts
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eufy Wall Light Cam S4 (2 pack): Industry-first 60 GHz mmWave radar detects motion with a 120° ultra-wide view and up to 12 m range, greatly reducing false alarms from pets or plants. You get fewer nuisance alerts and more reliable detection of actual human movement near your home.
eufy Wall Light Cam S4 (2 pack)
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eufy Security SoloCam E30: Built-in AI instantly detects and automatically tracks people, vehicles, or important events within view, minimizing false alarms. The SoloCam E30's smart tracking ensures you capture relevant activity without constant manual review.
eufy Security SoloCam E30
Which should you choose?
Best for
- Homeowners who want proactive security with radar-based detection and 4K video without extra hardware.
- Those with large yards needing bright floodlight illumination and existing HomeBase 3 users.
Not ideal for
- Users who need the brightest possible floodlight (choose E340 for that).
- Those on a tight budget who don't need 4K or radar (consider the eufy SoloCam E30 for a simpler solution).
