Buzzers are UL Listed for Class I, Divisions 1 and 2, Groups B, C, and D; Class II, Divisions 1 and 2, Groups E, F, and G; and Class III, Divisions 1 and 2 environments where flammable gases, combustible dust, and combustible fibers may be present.

Electric horns produce a continuous signal; for a noncontinuous signal interrupt the voltage from the power supply.

The 304 stainless steel horns have excellent corrosion resistance.

Air-powered horns operate without electricity.

Electric horns produce a continuous signal; for a noncontinuous signal interrupt the voltage from the power supply. They are 304 stainless steel and have excellent corrosion resistance.

Air-powered horns operate without electricity.

The built-in motor-driven fan in these sirens generates a shrill tone that's audible over long distances. Sirens emit a continuous tone. They have a shock- and corrosion-resistant housing, so they're approved for use on U.S. Navy ships.

Sirens can emit both continuous and pulse tones—pulse tones alternate on/off to draw greater attention than continuous tones.

Surface mount using included hardware or an outlet box (sold separately).

For technical drawings and 3-D models, click on a part number.

When this horn runs out of air, recharge it with the included pump.

This horn has a disposable canister that can be replaced when the propellant is gone.

Air horn storage cabinet includes a tamperproof safety-lock rod.These horns have disposable canisters that can be replaced when the propellant is gone.

The quick-opening valve on these whistles allows manual operation—pull the valve while air or steam pressure is being applied to produce a shrill tone and alert workers. The valve has a hole for attaching chain.

Apply air or steam pressure to produce a shrill tone and alert workers. Signal continues as long as pressure is applied.

Styles A and C are also known as piezo buzzers.

For Styles B and C, the volume increases as voltage increases.

Buzzers with a pulse tone alternate on/off to draw greater attention than buzzers with a continuous tone.

Buzzers with both a continuous and pulse tone can be wired to trigger two alerts, each corresponding to a different warning. If the continuous and pulse tone are both triggered at the same time, only the continuous tone will sound.

For technical drawings and 3-D models, click on a part number.

In addition to an audible signal, these alarms flash a high-intensity strobe to draw attention during fire emergencies.

Styles A and C have a strobe that helps comply with ADA standards for photosensitivity when properly installed.

Surface mount using an outlet box (sold separately for Styles A, B, and D).

Surface mount using an outlet box (sold separately).

These horns produce a sound loud enough to be heard in industrial settings.

With no moving parts as well as sealed electronic components, this horn is built to last even in wet conditions.

This horn has a built-in compressor, similar to that in a car horn, for a louder sound than other lift truck horns.

These alarms beep loudly and repeatedly when a vehicle moves in reverse. Wire them between the vehicle's battery and reverse lights. Alarms are resistant to vibration, dust, and moisture.

Alarm with automatic volume control detects the sound level around a vehicle and sets the alarm volume 5 dBA above that level.

Optional backup alarm switch activates the alarm when you shift into reverse, so you can use the alarm on a vehicle without backup lights.

Mount this signal up to 25 ft. away from your phone and it’ll alert you when someone calls with a bell, horn, vibrating chime, or single chime. Choose a tone and program your signal accordingly. Use a telephone cord (sold separately) to connect the signal to your wall jack. If you have a single wall jack, add a splitter with two jacks (sold separately) so you can connect both your phone and the signal. It can also be hardwired to your telephone ringer signal.

Note: For use with one-line analog phones only.

Provide a signal you can see and hear. Mount these signals up to 25 ft. away from your phone and they’ll alert you when someone calls with a strobe light and an audible signal. Choose a tone and program your signal accordingly. Use a telephone cord (sold separately) to connect these signals to your wall jack. If you have a single wall jack, add a splitter with two jacks (sold separately) so you can connect both your phone and the signal.

Bell for outdoor use can be hardwired to your telephone ringer signal.

Note: For use with one-line analog phones only.