| Model No | Input | Output | Functions | Applications |
| AT-740-WT1/ WT2/ WT3-Watt transducer | AC input: 110V/ 1A-110V/ 5A-220V/ 1A-220V/ 5A | DC voltage/current output | 1∮2W/1∮3W/3∮3W | Monitoring of electric power |
| AT-740-WH1/ WH2/ WH3-Watt-Hour transducer | AC input: 110V/ 1A-110V/ 5A-220V/ 1A-220V/ 5A | 1000 pulse/ KWH-10,000 pulse/ KWH-100,000 pulse/ kWH-Specified | 1∮2W/1∮3W/3∮3W | Accumulation of power consumption |
| AT-740-VR1/ VR2/ VR3-Var transducer | AC input: 110V/ 1A-110V/ 5A-220V/ 1A-220V/ 5A | DC voltage/ current output | 1∮2W/1∮3W/3∮3W | Central monitoring of electric power quality |
| AT-740-VAV/ VAI/ IAV/ IAI-AT-740-VEV/ VEI/ IEV/ IEI-AC Converter | AC voltage/ current input | DC voltage/ current output | Average with RMS calibration RMS | Conversion of AC signals from tachometer |
| AT-740-PAI/ PAV/ PEI/ PEV-PT Voltage transducer/AT-740-CAI/ CAV/ CEI/ CEV-CT Current transducer | PT voltage/CT current | DC voltage/ current output | Average with RMS calibration RMS | Monitoring of electric power systems-Central remote control and data acquisition |
| AT-740-HZ-Power frequency converter | Frequency: 45 -55Hz/ 55 - 65Hz/45 - 65Hz/Specified | DC voltage/ current output | -- | monitoring power frequency in electric power system |
