Power: 1 AA battery DC voltage: 10/50/250/500V (2kΩ/V) AC voltage: 50/250/500V (2kΩ/V) DC current: 50/250mA Resistance: 0 to 1MΩ in 1k range Battery check: 1.5V/9V Low frequency output: -20 to +22/36/50/56DB 配件:1组测试引线,1个AA电池(内置测试),0.25A 250V 1备用保险丝,1条指令手册