EYE on NPI – CUI Devices’ Illuminated Buzzers #EYEonNPI #digikey #adafruit @DigiKey @cuidevices @adafruit
Honk! Honk! This week’s EYE ON NPI (video) is jazzy, be-dazzly, and sure-to-get-your-attention-y: it’s CUI Devices’ Illuminated Buzzers, a set of incredibly loud audio indicators that also have built-in LEDs that light up!
What a great way to quickly turn an existing design into an accessible, multi-sensory alarm system without having to redesign the enclosure or PCB.
These are very loud buzzers, good for industrial equipment – with a range of 83 to 100 dB, loud enough to alert in an office or factory. The LEDs are also nice and bright, for good indoor visibility.
There are three sizes/shapes available. The smallest is the CLI-1375 PCB-mount design with 13mm diameter body, which is the same shape as many PC-pin buzzers. When powered with 6 to 15V it emits a piercing 83 dB, 4 KHz square wave and the inner LEDs light up. You can get 4 different shades of translucent plastic: red, yellow, green and blue. Note you aren’t expected to provide a square wave: there’s an internal wave generator. There’s two versions for the CLI-1375 buzzer, one has a steady tone and LED light, the other has 1 Hz-ish modulation for both the LEDs and beep.
The CLI-3224 medium size 32mm diameter is a nice panel mount version with 8 SMT LEDs, four color options, and a shape that is evocative of arcade buttons. This version has spade connectors for power, and can be powered from 3 to 15 VDC.
It will emit a 95 dB 3 KHz tone at the 12V rated power. Unlike the PCB-mount design, this one doesn’t have a ‘pulsing’ version.
Finally, the CLI-3623 large size is 36mm diameter and is also panel mount, but with a flatter top. It also has 8 SMT LEDs, and four colors. Like the CLI-3224, 3-15VDC power is provided via spade lugs. Volume is also 95 dB at 12VDC, the tone frequency is 3.5KHz.
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