| no. | file name | download |
| 1 | dlt 645-2007 multifunctional energy meter communication protocol |  |
| 2 | ds series single-phase power meter communication protocol description (version b) | |
| 3 | dtsd8080-l series three-phase intelligent electric energy meter modbus-rtu communication protocol | |
| 4 | ds series three-phase intelligent power meter communication protocol (b version) | |
| 5 | | |
| 6 | ci general modbus-rtu communication protocol for counting,timing and frequencey measurement products | |
| 7 | dtsd8080-4l series three-phase multi-loop smart meter modbus-rtu communication protocol | |
| 8 | cb7、cl7 | |
| 9 | ds9l | |
| 10 | kk052（a-0） | |
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