The HB4740/5740 smart voltage meter provides DC and AC voltage measurement with configurable ranges, digital filtering, and optional alarm and transmission outputs. It supports input voltages up to 500 V and features a large LCD display with adjustable zero, full‑scale, and decimal point settings.
The manual explains panel functions, parameter setting procedures, alarm configuration, transmission output setup, wiring diagrams, and example applications. It also includes ordering information and contact details for Huibang Technology. This manual is written in Chinese.
| Power Supply | AC/DC 85‑260 V |
|---|---|
| DC Voltage Display Range | -1999 to 9999 |
| AC Voltage Display Range | 0 to 9999 |
| DC Voltage Measurement Accuracy | 0.8 %FS |
| AC Voltage Measurement Accuracy | 1.0 %FS |
| Response Frequency | 50 Hz (custom 400 Hz available) |
| Relay Contact Capacity | AC 220 V 7 A/3 A |
| Relay Contact Life | 10 times |
| Transmission Output Accuracy | 0.8 % (12‑bit) |
| HB4740 Dimensions | 96 × 48 × 82 mm |
| HB5740 Dimensions | 79 × 43 × 58 mm |