How to use: First, find a suitable place to set up your Sennheiser EM 500 G2 wireless receiver. You'll need to connect your own power supply and antennas to make it work. Once connected, turn it on and start using it with your compatible devices. Note: This product is for use outside the U.S., so check your local wireless frequency laws before buying. It doesn't come with a power supply or antennas, so you'll need to get those separately. Maintenance: Keep the receiver clean by wiping it with a soft, dry cloth. Avoid using harsh chemicals. If there are any problems, it's best to contact Sennheiser support.