After paired with the Multi-Alert Receiver such as DCX-25 or DCX-800, the wireless door bell press can transmit a wireless signal to receiver when the button was pressed.
 

• Place outside the door act as a doorbell press or indoor as a calling button
• SUB-1G RF frequency with wireless transmission range up to 300m / 1,000ft (direct line of sight)
• IP44 water splash proof case design
• Low battery indication on receiver unit
• Compatible with the Multi-Alert receiver: MA-1000, DCX-900, DCX-800, DCX-25, DWA-800