Testing instruments (5)
| MODEL | VOLTAGE | FREQUENCY/HZ | INPUT POWER/W | PPM |
| YDK 71 | 100-240 | 50/60 | 5-30 | 800-2200 |
| 2200YDK 74 | 100-240 | 50/60 | 5-30 | 800-2200 |
| YDK 75 | 220-240 | 50 | 50 | 800-2200 |
| YDK 96 | 100-239 | 50/60 | 30-150 | 800-2200 |
| YDK 98 | 100-239 | 50/60 | 30-150 | 800-2200 |
| MODER | VOLTAGE/V | FREQUENCY/HZ | INPUT POWER/W | PPM |
| YJ-61-10 | 220-240 | 50 | 14 | 700 |
| YJ48-10 | 220-240 | 50 | 7.5 | 1000 |
| YJ48-12 | 220-240 | 50 | 8 | 1900 |
| YJ48-15 | 220-240 | 50 | 10 | 2200 |
| YJ61-10 | 220-240 | 50 | 14 | 700 |
| YJ61-16 | 220-240 | 50 | 24 | 1200 |
| YJ61-20 | 220-240 | 50 | 33 | 1600 |
| YJ61-25 | 220-240 | 50 | 35 | 1800 |
| YJ61-30 | 220-240 | 60 | 40 | 2500 |
| YJ61-40 | 220-240 | 50 | 42 | 2200 |