Sling Type Shoulder Megaphone
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100 Piece (MOQ)
Flame Proof Alarm Flasher
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Best Deals from Electronic Siren
Siren Alarm
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A siren is a loud noise making device. Most modern ones are civil defense or air raid sirens, tornado sirens, nuclear test sirens, or the sirens on emergency service vehicles such as ambulances, police cars and fire trucks. There are two general types: pneumatic and electronic. Many fire sirens serve double duty as tornado or civil defense sirens, alerting an entire community of impending danger. Most fire sirens are either mounted on the roof of a fire station, or on a pole next to the fire station. Fire sirens can also be mounted near government buildings, on tall structures such as water towers, as well as in systems, where several sirens are distributed around a town for better sound coverage. Most fire sirens are single tone and mechanically driven by electric motors with a rotor attached to the shaft. Some newer sirens are electronically driven by speakers, though these are not as common. Fire sirens are often called "fire whistles", "fire alarms", or "fire horns." Although there is no standard signaling of fire sirens, some utilize codes to inform firefighters of the location of the fire. Civil defense sirens pulling double duty as a fire siren often can produce an alternating "hi-lo" signal (similar to a British police car) as the fire signal, or a slow wail (typically 3x) as to not confuse the public with the standard civil defense signals of alert (steady tone) and attack (fast wavering tone). Fire sirens are often blasted once a day at noon and are also called "noon sirens" or "noon whistles".
horn tweeters
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W Horn Loudspeaker
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L-PHP15A is a 15 W horn loudspeaker. Its low-profile appearance and white cover makes it blend easily into many outdoor environments.In addition to excellent voice reproduction and sound transmission effect, the loudspeaker is water and dust protected, making it ideal for noisy and spacious outdoor applications, such as sports fields, parks, ex- hibition halls, factories and train stations etc.The horn loudspeaker is supplied with strong adjust- able mounting bracket, enabling the operator to com- plete the installation at ease.
Security Sirens
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4 Zone Intrusion GSM Alarm Control System Instant Siren and Call SMS Alert for Opened Zones Custom Pre-recorded Voice & Text Alert Messages 5 Individual users can be assigned Onboard Keypad with LCD Display Android Smart App for easy control Arm Disarm by calling from assigned mobile phones with optional Password protection through Android App Resettable Password Zone Status indications on display Memory to store 5 phone numbers
Flameproof Hooter
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motor siren
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motor siren, Morley Smoke Sensor, Wired Microphone, portable sound system
electronic sirens
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electronic sirens, lamp delay switches, electronic fan control switch