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

• It can be wall mounted or table stand
• SUB-1G RF frequency with wireless transmission range up to 300m / 1,000ft (direct line of sight)
• LED Lite-on to indicate at transmission
• Powered by 1pc of CR123A with long battery life
• Compatible with Multi-Alert receiver : MA-1000, DCX-900, DCX-800, DCX-25, DWA-800