Application for control miner PSU tester. It can enable power outputs of PSU without control board.
Checked with the next models:

Innosilicon:
- G1173 (T2Ti)
- G1191H
- G1240 (T2TZ T2TH T2THM T2TH)
- G1286 (T2THF 31t T2THM 30T T2TH 33T T3)
- G1306 (T3/T3+/T3H)

Avalon:
- PSU3300-01 PLUS

Whatsminer серии P21:
- WhatsPower P21

Whatsminer серии P22:
- WhatsPower P222C (whatsminer M32)
- WhatsPower P221

Likely it will work with other models Innosilicon/Avalon/Whatsminer.