Hello The Samsung Soundbar HW-S61D supports WLAN and Bluetooth for wireless connections. However, you cannot connect it directly to a projector via Wi-Fi, as projectors usually do not offer a Wi-Fi function for audio transmission. Instead, you could connect the soundbar via Bluetooth to a device that sends the sound to the projector or use another solution such as an external audio receiver that has HDMI inputs and forwards the sound to the soundbar.