The radio receiver is supplied with a power plug for a firm attachment so that you can install it anywhere in your home. The emergency bell is portable and is delivered with a collar so that it is always at hand. It is operated with batteries that are included. The range of the alarm station is up to 80 meters in the open area, which means that you can use it anywhere in your home or garden. In addition, the system can be expanded with additional emergency buttons so that several people can use the service in their household. As an end user, the customer is legally obliged to return used batteries. He can return old batteries that the provider has or has carried in its range as new batteries free of charge to the provider's shipping warehouse (shipping address). The symbols shown on the ba.