1. Power supply voltage: 4.5V 2. Power supply: three AA batteries (not included) 3. Energy saving and environmental protection, automatic shutdown after three minutes of no operation 4. 0-9 wood density gear selection, measure against wood density 5. High-frequency electromagnetic wave induction probe, no need for probes, can quickly and accurately measure data 6. The upper limit value will beep and alarm 7. High-definition backlight display, easy to read the value under strong light at night 8. Dimensions: 150x54x27mm 9. Weight: about 275 grams
