Pointer type DC voltmeter is good for measuring current and voltage in AC and DC circuits.
Instrument accuracy grade: 2.5, 1.5.
Insulation strength: AC voltage 50Hz, 2KV for 1 minute.
Mechanical Resistance Performance: can withstand acceleration of 30 m/s2, impact frequency of 80 to 120 times per minute, 2 hours of transport vibration.