1. Easy to install, simple to use, no complicated steps
2. Energy saving and environmental protection, stable performance
3. Frequency range: 20-75Hz
4. Voltage range: 60-500V AC
5. Accuracy: +/- 2%
6. Ambient temperature: 0-50 degrees Celsius
7. Opening size: 22mm
8. Overall size: about 2.83 x 5.14 x 2.03cm