We may have found other answers which could help you.
Click here for Change Time Goinghow to replace batteries in my Drayton Digistat RF1?
Drayton sm2 timeswitch?
Drayton Digistat RF2 Wireless system?
is it possible to repair a non digital Drayton SM2 timer?
drayton digistatrf1 wireless system?
Help to fix a room thermostat, please?