Imou 128GB MicroSDXC Surveillance Card Class 10 U3 V30

Product Overview

The Imou ST-128-S1 128GB MicroSDXC Surveillance Card provides high-capacity, surveillance-grade edge storage engineered specifically for continuous 24/7 video recording, high-resolution motion capture, and extended multi-week footage retention. Designed to handle the rigorous write cycles of modern security installations, this card delivers smooth, dropped-frame-free performance in high-resolution Full HD, 2K (4MP/5MP), and 4K Ultra HD smart IP cameras and CCTV systems.

Part of the Imou ST Series—purpose-built for surveillance workloads and fully compatible with most major IP camera brands that accept microSD local storage—the ST-128-S1 is ideal for homeowners, retail shops, and commercial facilities requiring expansive standalone video storage without relying exclusively on cloud subscriptions or local NVR hard drives. Meeting Class 10, UHS-I (U3), and Video Speed Class 30 (V30) standards with read speeds up to 95 MB/s, it provides fast video export, smooth remote playback scrubbing, and rugged long-term write endurance.

✅ Key Features

• Capacity: 128 GB — MicroSDXC format.

• Speed Class: Speed Class 10, UHS-I Speed Class 3 (U3), Video Speed Class 30 (V30) — read speeds up to 95 MB/s, write speeds up to 38–40 MB/s.

• Surveillance-Grade Endurance: Engineered for continuous 24/7 write cycles and high-frequency overwrite loops.

• 4K UHD & High-Megapixel Video Support: Sustained throughput optimized for high-bitrate codecs (H.265 / H.264).

• Loop Recording Compatible: Seamlessly auto-overwrites the oldest video footage when capacity is reached.

• Low Power Profile: Highly efficient energy consumption, making it ideal for battery-operated and solar-powered outdoor cameras.

• Industrial 4-Proof Durability: Waterproof, shock-resistant, anti-magnetic, airport X-ray proof, and high/low temperature resistant.

• Expansive Standalone Storage: Quadruples entry-level storage capacity for extended on-camera video archives.

📸 Compatible Devices

• Imou Smart Security Cameras (Ranger, Cruiser, Bullet, Cue, Rex series)

• Universal IP Security Cameras with MicroSDXC slots (Bullet, Turret, Dome, PTZ)

• Video Intercoms, SIP Video Door Phones, and Smart Video Doorbells

• Vehicle Dashcams and Mobile Surveillance Recorders

• Baby monitors, pet cameras, and home automation monitoring hubs

🕐 Approximate Recording Capacity at 128GB

• 720p @ 15fps: ~20–28 days of continuous recording

• 1080p @ 15fps: ~14–18 days of continuous recording

• 1080p @ 25fps: ~8–12 days of continuous recording

• 2K / 4MP @ 15fps: ~6–10 days of continuous recording

• 4K UHD @ 15fps: ~3–5 days of continuous recording

• Motion Detection Mode: Up to 2–4× longer retention compared to continuous recording

Note: Actual recording time varies based on camera compression algorithms (H.264 / H.265 / Smart Codecs), bitrate parameters, frame rates, motion detection sensitivity, and scene complexity. Enabling motion-triggered recording significantly extends local video retention.