Does anyone know of a cable tacker suitable for telephone and alarm cables which will enable me to put the cable in to the corner where two walls meet at 90degres.
I have seen many alarm motion sensors placed at the top of the wall near the celling where the wire runs down to the floor. I can’t seem to find a staple/cable tacker gun that will do this as they all seem to be flat at the base. Called up fixing guns.co.uk & Tacwise (both have a massive range of fixing guns) and they said they don’t do one. 
Is there a device out there or a special technique to be able to do this??
I have seen many alarm motion sensors placed at the top of the wall near the celling where the wire runs down to the floor. I can’t seem to find a staple/cable tacker gun that will do this as they all seem to be flat at the base. Called up fixing guns.co.uk & Tacwise (both have a massive range of fixing guns) and they said they don’t do one. 
Is there a device out there or a special technique to be able to do this??