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All siren and light control functions are located on the front panel of the unit. The panel is illuminated with non-glare backlight that may be wired to the dash lights for dimming control, or directly to the ignition for on/off control. The PA400SS siren provides wail, yelp, and priority siren tones as well as the TAP II feature, public address (PA) radio rebroadcast, and air horn sound. The unit is designed to drive one or two high power (100 watt) speakers. For control of lights and other auxiliary functions, nine relay outputs are available. A special feature of the PA400SS is the Park-Siren Deactivator, which when connected, deactivates the siren tones when the vehicle is shifted into park. A convenient four-position slide switch with progressive LED indicators is standard. The slide switch allows simplified and rapid selection of most common siren and lighting functions. In slide switch Mode 2 and 3, the horn ring function is enabled to provide the TAP II feature. The TAP II feature allows the user to change the siren sound from wail to yelp, yelp to priority, and priority to air horn via the vehicle's horn ring. When in slide switch Mode 2 or 3, the horn ring switch determines the function of the vehicle horn ring. In the centre position, the vehicle's horn will sound. In the left (SIREN) position, pressing the vehicle's horn ring activates the TAP II function and changes the audible siren sound. In the right (A/H) position, pressing the vehicle's horn ring will sound the air horn tone. The transfer relay of the horn ring is rated at 10 amps, therefore no external relay is needed. A noise-canceling microphone is wired-in to prevent loss or theft. It provides high quality voice reproduction without feedback "squeal". The microphone push-to-talk switch overrides any siren signal for instant PA use. PA volume is adjustable by means of a front panel volume control.
Installation
How to Order
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| Input Voltage | 11 Vdc to 16 Vdc (negative ground only) |
| Standby Current | 7mA |
| Operating Current (amplifier) | 8A (at 13.6V with 11-ohm load) 14A (at 13.6V with 5.5-ohm load) |
| Operating Temp. Range | -30° to +65° |
| Frequency Range | 700 to 1500Hz (nominal) |
| Nominal Cycle Rate | Wail - 12 cycles/min. Yelp - 180 cycles/min. |
| Voltage Output (approx.) | 64V peak-to-peak (siren tones) |
| Audio Frequency Response | 300Hz to 3,000Hz &31773dB |
| Audio Power | 45 watts in PA Mode (typical with 1.4V peak-to-peak input) |
| Input Impedance (PA) | 4000 ohms (nominal) |
| Current Ratings: | |
| -Slide Switch Outputs | 50A combined total |
| -Mode 1 | 30A |
| -Mode 2 | 30A |
| -Mode 3 | 30A |
| Push Button Switch Outputs | 30A combined total |
| -A-F | 20A each |
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