We bought some of these (I think it was the 690 model though) for a project at work along with the power supply. The power supply had 350VDC on a connector with exposed pins
![ThumbsDown :--](https://www.eevblog.com/forum/Smileys/default/icon_thumbsdown.gif)
When we linked some of the flashes together with hot-shoe attachments two of the flash units blew up and the power supply took out the 32A type C MCB
![Clapping :clap:](https://www.eevblog.com/forum/Smileys/default/clap.gif)
Canon flashes were perfect.