WG7831-D0 2.4GHz System in Package Module Jorjin Technologies WG7831-D0 2.4GHz WLAN + BLUETOOTH® System in Package (SiP) Module is based on the WL1831 from Texas Instruments. The WG7831-D0 SiP Module contains a crystal, power amplifier, Tx filter, Tx/Rx switch, and the necessary passive components to fully implement the 802.11b,g,n WiFi & Bluetooth 4.2 functions.