





STI3300
Hear your doorbell chime at an additional location in your home by setting up the STI Wireless Doorbell Extender with Receiver. This complete DIY kit comes with a wireless receiver that plugs into an outlet up to 500 feet away from your existing doorbell chime to alert you when the button is pressed.
The included "Wireless Doorbell Extender" wires into your existing hardwired doorbell chime. When the existing chime receives a signal from your doorbell button, the extender also triggers and sends a wireless signal to the plug-in receiver. The receiver then alerts you by chiming. Your existing doorbell will continue to chime as well.
The receiver provides two different alert sounds to choose from, allowing you to customize your chime, and also differentiate between various transmitters (sold separately) in your system.
Expandable System
As part of the STI Wireless Chime Series, the included receiver can be used to monitor up to 10 wireless transmitters total (sold separately). Available add-on transmitters include door sensors, extra doorbell buttons, and more.
Note: Requires a hardwired doorbell to operate. May not work properly with door chimes that play melodies or use batteries.
Safety Technology International (STI) is a family owned and operated business that began over 35 years ago with Jack Taylor's invention of the Stopper Pull Station Protector. STI now markets more than 1,000 products throughout the world that help prevent false fire alarms, theft, and vandalism of the devices that protect us all.