When the wireless doorbell button is pressed, it sends out a signal centered at 916.8 MHz ... Frame bits used in Honeywell RCWL300A, RCWL330A, Series 3, 5, 9 and all Decor Series Wireless Chimes # ...

wireless door bells use radio waves to connect a transmitter switch to the chime and have a transmitter unit inside the button mechanism. To help you choose the best wired or wireless doorbells ...