div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: Mantech Electronics Leader in Electronic and Industrial · National Time Switch TB17 Operating Instructions —50 —50 SERIES TB176 TB178 TB179 11 OVAC 200 — 220VAC 240VAC src=https:reader034vdocumentinreader034viewer20220424185f34c2059198ce6efa65a693html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: Mantech Electronics Leader in Electronic and Industrial · National Time Switch TB17 Operating Instructions —50 —50 SERIES TB176 TB178 TB179 11 OVAC 200 — 220VAC 240VAC src=https:reader034vdocumentinreader034viewer20220424185f34c2059198ce6efa65a693html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv