Technical audit of the KERUI Wireless Home Security Alarm System Kit identifies a hub-and-sensor architecture utilizing unencrypted 433MHz (OOK/ASK) radio frequencies. The siren component provides a high-frequency piezo output of 110dB at peak, while the processing logic is handled by an 8-bit MCU optimized for low power consumption rather than complex automation.
Hardware specifications indicate that the system lacks "heartbeat" monitoring, meaning the hub cannot proactively detect sensor battery failure or signal jamming. The 433MHz protocol is susceptible to signal collision in environments with multiple active RF devices, and the typical indoor range is limited to 30 meters due to masonry and metal stud attenuation.
The system provides a local security solution without monthly subscription fees, but it lacks integration with modern encrypted standards such as Matter or Thread. Sensor batteries (CR2032 or 23A) require manual testing as no low-power notification is broadcast to the hub.
- Wireless Protocol: 433MHz (Unencrypted)
- Peak Siren Output: 110dB
- Logic: 8-bit MCU Standalone Hub
Aggregated data suggests this unit is a classic Tuya-compatible ODM chassis, emphasizing plug-and-play operation for local deterrence while maintaining a low hardware complexity profile.
The YoLink Outdoor Smart Alarm Siren Kit provides a technical upgrade for those needing encrypted, long-range LoRa communication.
This system serves as a foundational kit within the wireless sirens and panic buttons hardware group.
