## Common ground
All are electronic devices designed to monitor babies, typically used in homes for safety and convenience.
## Options at a glance
**8517.69 – Baby radio**
- **Defining trait:** Transmits only audio (no video); relies solely on sound transmission.
- **Typical examples:** Audio-only baby monitors with parent unit and baby unit.
- **Best fit when:** Only sound monitoring is needed, or when privacy and low cost are priorities.
**8528.59 – Video monitor systems (video monitor determines character)**
- **Defining trait:** Video function is central; the system’s main purpose is visual monitoring.
- **Typical examples:** Monitors where video display is the primary feature, even if audio is included.
- **Best fit when:** Real-time visual observation is essential (e.g., watching baby’s movements).
**8528.72 – Video monitor systems (TV receiver determines character)**
- **Defining trait:** Uses a standard television as the display; the TV defines the system’s function.
- **Typical examples:** Systems that connect to an existing TV via HDMI or RF.
- **Best fit when:** Using a household TV as the viewing screen, avoiding extra monitor hardware.
**8531.80 – Monitors with alarm function**
- **Defining trait:** Includes a built-in alert system (e.g., motion or sound-triggered alarms).
- **Typical examples:** Devices that beep when baby cries or moves excessively.
- **Best fit when:** Safety alerts are critical, especially for parents needing immediate notifications.
## Key differences
| Feature | 8517.69 (Radio) | 8528.59 (Video monitor) | 8528.72 (TV receiver) | 8531.80 (Alarm) |
|--------|------------------|--------------------------|------------------------|-----------------|
| Primary signal | Audio only | Video display | Video via TV | Alert trigger |
| Display type | None or small screen | Dedicated screen | Standard TV | Small screen/LED |
| Core function | Sound transmission | Visual monitoring | TV-based viewing | Alarm activation |
## How to choose
- Does it show video? → 8528.59 or 8528.72
- Is the video displayed on a standard TV? → 8528.72
- Is it only audio? → 8517.69
- Does it trigger alarms (e.g., cry, motion)? → 8531.80
## Overlaps & pitfalls
A device may combine features (e.g., video + alarm → 8528.59 or 8531.80). The main function determines the HS code. If both video and alarm are key, prioritize based on whether video display is central (8528.59) or if alarm is the primary purpose (8531.80). No option is clearly dominant; use the product’s **main function** to decide