Holley Group Co., Ltd.
Tested energy meters of this manufacturer are listed below
| WO No | 2079114 |
| QUA/CAL | |
| Report No | 05-1070 |
| Country | China |
| Type | DDS28 |
| Class (Wh) | 1 |
| Elements | 1-phase |
| Wiring | 2-wire |
| Connection | Direct connected |
| Technology | Static (electronic) |
| Frequency | 50 or 60 |
| Current | 10(80) |
| Voltage | 120 or 230 |
| Register | Mechanical & LCD |
| Standards | IEC 62053-21 |
| WO No | 2037990 |
| QUA/CAL | |
| Report No | 03-2077A |
| Country | China |
| Type | E130-ts |
| Class (Wh) | 2 |
| Elements | 1-phase |
| Wiring | 2-wire |
| Connection | Direct connected |
| Technology | Static (electronic) |
| Frequency | 50 |
| Current | 10(80) |
| Voltage | 230 |
| Register | Mechanical |
| Standards | IEC 62053-21 |