BELL-560-RX Wireless Receiver - with a plug-through connector and a light ring as a visual doorbell indicator The BELL-500 Series is a line of wireless doorbells with a range of up to 500 meters in open space. Depending on the model, there are 16 different ringtones to choose from. The new BELL-500 models are compatible with all components of the BELL and FG series and can be expanded and combined according to your preferences.