| Voltage: | 120v |
|---|---|
| Burner Brand: | Beckett |

You would check the unit with a volt meter.
Allanson part 421-BT636 is the recommended functional replacement for Webster part 312-25AX0202.
No, this part would not work on that system. We recommend that you use the solid state transformer, part 2275-658, instead. You can find it here: http://www.pexsupply.com/Allanson-2275-658-Solid-State-Ignition-Transformer-for-Becket-AFII-Burner-11677000-p