It seems like you're asking about safety features or protections that might be built into a device, possibly a meter of some sort. However, without specific context, it's challenging to provide a detailed answer. Meters can refer to a variety of devices used for measuring different things, such as electricity, water, gas, or even blood pressure. Each type of meter may have different safety features.

Here are some general safety features that might be found in various types of meters:

1. **Overload Protection**: Many meters have a mechanism to prevent damage from excessive input, such as too much current or pressure.

2. **Short Circuit Protection**: This feature can automatically cut off the flow of electricity in the event of a short circuit, which is a dangerous condition that can lead to fires or damage to equipment.

3. **Water-Resistant or Waterproof Design**: For meters used in environments where they might be exposed to water, a certain level of water resistance can protect against electrical shorts and other damage.

4. **Shock Protection**: Electrical meters may have insulation and other design features to minimize the risk of electric shock.

5. **Tamper-Proof Design**: Some meters are designed to prevent unauthorized access or tampering, which could compromise their accuracy or safety.

6. **Automatic Shutoff**: In the event of a detected fault, some meters can automatically shut down to prevent further issues.

7. **Backlighting**: For meters with a display, backlighting can be a safety feature that allows for easy reading in low-light conditions, reducing the risk of misreading and potential accidents.

8. **Audible Alerts**: Some meters may have alarms or buzzers to alert users to certain conditions, such as low battery, high readings, or malfunctions.

9. **Data Protection**: For smart meters that transmit data, encryption and secure communication protocols can protect against data breaches and ensure privacy.

10. **Child Safety Features**: In the case of medical meters like blood glucose monitors, child locks can prevent children from accessing or altering readings.

11. **Certifications and Standards Compliance**: Meters are often required to meet certain safety standards and certifications (like UL, CE, or ISO standards), which ensure they have been tested and comply with safety regulations.

12. **Regular Self-Tests**: Some Wholesale Cabinet Dehumidifier meters are programmed to perform self-tests to ensure they are functioning correctly.

If you're referring to a specific type of meter, please provide more details so that a more precise answer can be given. If you're asking about a utility meter, the safety features might relate to preventing electrical accidents or ensuring accurate billing. If it's a medical meter, the focus might be on preventing contamination or ensuring accurate readings for health and safety.