2-way installation box for touch sensor Berker TS Sensor - for flush-mounted and hollow wall installation - installation flush with the wall or with adapter ring Dimensions (W x H x D) 68 x 139 x 47.5 mm Milling hole diameter 2 x 68 mm Milling hole spacing 71 mm Attention! Due to the installation depth, not suitable for the KNX adapter 2 x 8-way and universal interface 8-way.