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Tapo C520WS vs Imou S21FEP

Wired reliability or a siren and full-colour night vision?

Both are 2K outdoor cameras that pan. The Tapo can be plugged into a cable, which removes the whole class of intermittent Wi-Fi problems. The Imou stays wireless and adds a siren and colour at night.

Tapo C520WS outdoor camera with twin antennas on a wall mount

Tapo C520WS

Wins 3 of 6

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≈ £46 / 43 €

Imou S21FEP outdoor pan-and-tilt camera with dual antennas

Imou S21FEP

Wins 1 of 6

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≈ 34 €

Line by line

Compared on C520WS S21FEP
Resolution 2K 4 MP 2K 3 MP
Low light F1.6 Starlight sensor Full-colour night vision
Horizontal sweep 360° 355° pan, 90° tilt
Connection Wi-Fi or Ethernet Wi-Fi
Built-in siren Not stated 110 dB
Weather rating IP66 IP66

A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these products answer different questions.

Which one, for whom

Buy the Tapo C520WS

Buy the C520WS if a cable can reach it. The Ethernet port is worth more than any specification on this page, because it removes the failure that makes outdoor cameras frustrating.

Buy the Imou S21FEP

Buy the S21FEP where no cable can go and a noise is worth having — the siren turns a camera that records into a camera that interrupts.

Questions people actually ask

What does an F1.6 aperture actually change?

It admits more light than the F2.2 typical of cheaper cameras, so the sensor produces colour in poorer conditions before falling back to infrared. It is sensitivity, not night vision: in genuine darkness both cameras still light the scene themselves.

Is a camera siren useful?

In an occupied house, sometimes — it interrupts, which recording never does. In an empty one it is a noise nobody hears. Treat it as a deterrent feature rather than as an alarm, and do not let it decide the purchase on its own.

The full reviews

  • Tapo C520WS

    2K 4MP · F1.6 Starlight · 360° pan · IP66 · Wi-Fi or Ethernet

    The model TP-Link points its own budget buyers towards. A 2560 × 1440 sensor behind an F1.6 lens gives colour at night without a spotlight, and unlike most cameras in this price band it can be wired to Ethernet instead of trusting Wi-Fi.

    Best for: An outdoor position where Wi-Fi is unreliable and a network cable can be run, or where colour at night matters more than an unlit image.

    ≈ £46 / 43 €

  • Imou S21FEP

    2K 3MP · 355° pan, 90° tilt · full-colour night vision · 110 dB siren · IP66

    Imou states a 3 MP sensor, four night-vision modes including full colour, AI person and vehicle detection and a 110 dB siren, in a dual-antenna housing rated IP66. It sits between the budget cameras and the tracking models in price and in capability.

    Best for: A garden or driveway where false alarms from foliage and insects have already made a cheaper camera unusable.

    ≈ 34 €