Yet another incarnation of the 711.  The bakelite base is the same and there is the slot for the rheostat but there's no light.   It also has the beige face like the AB-716. The aluminum dial also extends all the way around so there's no diffusion glass.  Speaking of diffusion glass-- it seems like that was the first thing people threw away when they got their Telalarm.  More often than not, it's missing.