powercall

5 лет назад

This video is a detailed walkthrough of the X71 siren, a two-tone concealed emergency siren. The creator, David Fierstein, explains the siren's features, wiring, and installation process. They also demonstrate a hidden feature that allows for an air horn sound.

2 года назад

This video features a refurbished UDX7 siren, which is in perfect working order. The siren has a first-generation circuit board, which is brand new but lacks the screws holding the terminal strip and USB port. The seller offers a 90-day warranty and explains the differences between the first-generation board and the current board.