![Unpacking & Pre-installation](/images/new-backgrounds/54174/541745x1.webp)
Instant Public Address - The Public Address function will override the siren function when the microphone
Automatic Short Circuit Protection- The siren will sense a short circuit on the speaker terminals and automatically go to standby until the fault is removed. Once the fault is removed the siren will return to normal operation.
Noise Canceling Microphone - A
Unpacking & Pre-installation
After unpacking your 4000 Series Siren, carefully inspect the unit and associated parts for any damage that may have occurred in transit. Report any damage to the carrier immediately.
Installation & Mounting
Figure 1, Light Bar Mounting
The 4000 Series of Sirens is designed to be mounted inside a light bar or inside the vehicle. Do not mount the siren inside the engine compartment. Mounting hardware is supplied (see Fig. 2) for mounting the amplifier inside the light bar.
NOTE: Setups and adjustments will be made in subsequent steps that may require access to the siren. Plan the installation and wiring accordingly.
3