The Velbus VMB2BL is a dual channel controller and has been designed to activate electric sun blinds or electric motor i.e. roller shutters or electric gates. The VMB2BL module features manual override control, can be controlled be several push buttons connected in parallel and can interface with the Velbus Home Automation System. The device can be programmed with or without the aid of a PC, using a unique simple learning process. All settings are stored and will not be lost in the event of a power failure. There are up to 248 possible address for each module, indication of relay status (Up/Down), power and data are displayed on LED's. Additional software to up grade and improve this product is available from the Velleman support section on there website.