Model and specification: YL4U-31 Panel size: 80 × 80mm Hole size: 76 × 76mm

Model and specification: YL4U-51 Panel size: 96 × 48mm Hole size: 91 × 44mm

Model and specification: YL4U-91 Panel size: 96 × 96mm Hole size: 91 × 91mm

Model and specification: YL4U-A1 Panel size: 72 × 72mm Hole size: 67 × 67mm

Note: Accuracy of digital single-phase voltmeter: 0.5 level, optional 485 communication, transmission output, input, alarm output, etc.

Digital single-phase voltmeter