... hole, install the time relay into the installation hole with a frame. Overall dimensionmm48×48×125 Hole sizemm45×45Method to use1. As ... contactchanges,the time control is over.3.open the power ,a couple of LED at left side start timing ,the time ... ', 'lower' is disconnect, 'general', 'higher' is connect;at one time ,a couple of LED at right side start timing,until time ...