Mk 2. Replaces the old style from January 2008. For CDI/SI/I JUN/I SYS. The DT10RF is a room thermostat and 'On/Off' time period programmer that communicates with the fascia on the boiler using wireless technology, massively reducing the cost and time of installation. The digistat can control 6 time periods over a single 24hr cycle period.
Worcester part 7716192052