Digital peak voltmeter: Characteristcs: 1. integrated circuit 2. AC220V and DC12V two power supply ways, it is eaasy to carry, anti-duct, anti-shock,it can be used in the lab as well as the filed. 3. digital display, clear and correct. Technical parameter: Measurement range: 0.01～10Vp Input impedence: 100kΩ Frequency response characteristic: ±2％ ±0.1％ full range Precision: ±2％ ±0.1％ full range Display: digital display Peak choice: 1 sec; no limit Reset:manual;automatic Power: AC220V±10％ 10VA ；DC9～16V 0.5A Working temperature: －10degree～40degree Working humidity: ≤85％