Strange device used on doorbell camera

A strange device was used on my doorbell camera today. Does anybody know what this is? It looks like a radio but it has red lights around the camera-like device. It blinked red three times and then he stopped.

Search for “Multi-Function Hidden Camera Detector Bug Detector GPS Signal Lens Anti-spy RF Magnetic Tracker GSM Listening Device Infra-red Scanner” on Amazon.
Appears to be similar based on picture.

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Indeed, that’s the back of a RUIZHI K18