Specifications:Brand new and high quality. Measuring range: DC 0V--32V. Input range: DC 2.7V-32V(Max Input: DC 32V. The device can be damaged if input is over 32V). Display: Three 0.36 "digital tube. Measurement accuracy: 0.1%. Refresh rate: about 300mS / times. Input impedance: About 100K. Pitch of holes:28mm. Aperture size :2.8mm. Operation Temp: -10â„-+65â„. Size:2.2cm x 1.4cm x 1cm.