Indication Supply Flasher Units - 1973, 1976, 1979 & 1982
![](http://www.bygonebytes.co.uk/ses/s_Dundee_Flasher_Unit.jpg)
When you walk in to a Relay Room you generaly hear the constant clunk of a Flashing Supply Relay, if you don't the chances are it has one of our Electronic Flasher Units.
The ScR Flasher Unit has gone through 4 iterations with the last one being accepted in the BR Catalogue for supply anywhere in the UK although I suspect it was only used on the ScR.
The Mk4 Unit is quite versatile and can operate from 12V, 24V and 50V and can flash the B, N BX or NX supplies.
![](http://www.bygonebytes.co.uk/ses/s_73SES1_Flasher_Unit.jpg)
![](http://www.bygonebytes.co.uk/ses/s_76SES1_Flasher_Unit.jpg)
Flasher Units MK1 and MK2.
![](http://www.bygonebytes.co.uk/ses/s_79SES1_Flasher_Unit.jpg)
![](http://www.bygonebytes.co.uk/ses/s_82SES5_Flasher_Unit.jpg)
Flasher Units MK3 and MK4.
![](http://www.bygonebytes.co.uk/ses/s_SCR_M_111 - 4_Artwork.jpg)
Artworks for MK4 Flasher Unit
![](http://www.bygonebytes.co.uk/ses/s_Banavie_Flasher_Unit.jpg)
One of the MK4 Flasher Units.