This is a VHF fixed crystal wireless intercom base station. It comes without a power supply. There's a known issue where the front button is missing, but it still functions as expected. Remember, no power supply is included.

Using this Telex RadioCom BTR-300 wireless intercom base station is easy. First, make sure you have your own power supply since it's not included. Connect the base station to the power source and start using it to communicate. As for the missing front button, don't worry, it won't affect the normal use. When it comes to maintenance, keep it in a dry and clean place. Avoid exposing it to extreme temperatures or moisture. If you notice any other issues during use, it's best to contact customer service for help.