DiO 1.0 products operate under a proprietary protocol with a radio frequency of 433 MHz, while the DiO 2.0 range operates at a radio frequency of 868 MHz.
This means the products will not be directly compatible with each other.

You can, however, have them interact with each other by using the HomeBox or DiOHub, and thus use a DiO 1.0 remote control unit to control a DiO 2.0 receiver, for example.