1. DC voltage: 0-620V (DC mode), 0.5-620V (automatic mode) 2. AC voltage: 0-620V (AC mode), 0.5-620V (automatic mode) 3. Resistance: 0-10 4. Frequency: 10-1000Hz 5. Infrared temperature measurement: -20 degrees to 400 degrees 6. Ambient temperature: 0-50 degrees 7. Diode: can identify within 2.0V 8. Automatic shutdown: 5 minutes 9. Power supply method: 2xAA AA batteries (not included in this product) 10. Object distance ratio: 4:1 11. Voltage and current can be detected simultaneously, and AC and DC can be automatically identified. 12. LCD color screen digital display, the larger the count, the higher the accuracy.