Heavy duty,industrial quality TR440dS - with digital display, comes with a built-in battery backup, automatic daylight savings time adjustment,
perpetual calendar & synchronized display - 1 year standard factory warranty.
*Now includes a dry contact relay for external signal control!
** TR440dS has a power block on the cord and uses a different key then TR440d
Buyers Guide, WBWKLY, MSMLY, MEMRET