The AtlasIED Z-Sign is a wireless transceiver used with the Z Series Z2 and Z4 base units to remotely activate the Z Series Speech Privacy Enhancement mode for applications where secure speech privacy is required. The Z-SIGN also visually indicates when the room is in Speech Privacy Enhancement mode. The optional Z-SIGN can be mounted on a wall or placed on a desk. The Z-SIGN can be powered via rechargeable batteries or by a 5V DC power supply. The Z-SIGN can be used in three different operations. The most common use for the Z-SIGN is to be used as a wireless switch to activate the Speech Privacy Enhancement mode in a Z Series unit.This application also serves as visual indicator to see if speech privacy is engaged. The Z-SIGN can also be used strictly as a visual indicator with the activation button being disabled. In this application, it is common for the Z-SIGN to be used as a second or third visual indicator in a meeting room. Finally, the Z-SIGN can be used as a data transmission/receiving conduit between a mobile device and a Z Series unit. The Z-SIGN incorporates BLE communication technology for pairing to a mobile device for short distance data communication (not streaming audio), and uses 915 MHz ISM Band to transmit longer distances to a Z Series unit. The Z Series mobile app is needed for this function. Using the mobile app with a Z-SIGN allows for mobile control of the Z Series unit and status of the Z System.