AC Voltmeter with Rectifier Accuracy:Class 1.5. Specification:3V, 5V, 7.5V...450V. Over 450V use external ... resistor...... Square Type Moving Coil AC Voltmeters with Rectifier 240 ... nominal mark is L.3. Accuracy: Class 1.5.4. Specification: 3V, 5V, 7.5V, 10V, 15V, 20V, 30V, ... enquiry, welcome to contact us. AC Voltmeter with Rectifier