There is no specific limit for WPmSCREEN / WPNETTOUCH, but the maximum number of EclerNet devices connected to the same system is 253. WPmSCREEN / WPNETTOUCH, MIMO88, DUO-NET PLAYER are all EclerNet devices. For example, if you have 2 MIMO devices, you can connect up to 251 WPmSCREEN.