About Sound Levels
To choose an alarm or speaker that’s loud enough, first determine the decibel (dB) rating of background noise.
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Panel-Mount Miniature Buzzers
A
C
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.
Mounting Holes | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | Voltage | Current | Volume | Sound Pattern | For Panel Cutout Dia. | Dia. | Dp. | Material | Fasteners Included | No. of | Dia. | Specifications Met | Each | |
With Screw Terminals | ||||||||||||||
| A | 1-28V DC | 0.015 A @ 24 V DC | 95 dB @ 10 ft. | Continuous | 1 1/8" | 1 3/4" | 1 3/4" | Plastic | __ | __ | __ | __ | 00000000 | 000000 |
| A | 3-15V DC | 0.02 A @ 12 V DC | 90 dBA @ 30 cm. | Pulse | 1 1/8" | 1 3/4" | 1 3/4" | Plastic | __ | __ | __ | __ | 00000000 | 00000 |
| A | 3-28V DC | 0.04 A @ 24 V DC | 96 dBA @ 30 cm. | Continuous | 1 1/8" | 1 3/4" | 1 3/4" | Plastic | __ | __ | __ | __ | 00000000 | 00000 |
| A | 4-16V DC | 0.02 A @ 12 V DC | 90 dBA @ 30 cm. | Fast Pulse | 1 1/8" | 1 3/4" | 1 3/4" | Plastic | __ | __ | __ | __ | 00000000 | 00000 |
| A | 4-28V DC | 0.022 A @ 24 V DC | 80 dBA @ 30 cm. | Fast Pulse | 1 1/8" | 1 3/4" | 1 3/4" | Plastic | __ | __ | __ | __ | 00000000 | 00000 |
| A | 4-28V DC | 0.022 A @ 24 V DC | 80 dBA @ 30 cm. | Pulse | 1 1/8" | 1 3/4" | 1 3/4" | Plastic | __ | __ | __ | __ | 00000000 | 00000 |
| A | 4-28V DC | 0.03 A @ 24 V DC 0.04 A @ 24 V DC | 86 dBA @ 30 cm. | Continuous, Pulse | 1 1/8" | 1 3/4" | 1 3/4" | Plastic | __ | __ | __ | __ | 00000000 | 00000 |
| A | 30-120V AC | 0.03 A @ 110 V AC | 80 dBA @ 30 cm. | Pulse | 1 1/8" | 1 3/4" | 2 3/8" | Plastic | __ | __ | __ | __ | 00000000 | 00000 |
| A | 30-120V AC | 0.03 A @ 120 V AC | 90 dBA @ 30 cm. | Continuous | 1 1/8" | 1 3/4" | 2 3/8" | Plastic | __ | __ | __ | __ | 00000000 | 00000 |
| A | 60-250V AC | 0.03 A @ 240 V AC | 90 dBA @ 30 cm. | Continuous | 1 1/8" | 1 3/4" | 2 3/8" | Plastic | __ | __ | __ | __ | 00000000 | 00000 |
| A | 60-250V AC | 0.03 A @ 240 V AC | 80 dBA @ 30 cm. | Pulse | 1 1/8" | 1 3/4" | 2 3/8" | Plastic | __ | __ | __ | __ | 00000000 | 00000 |
With 2 Wire Leads | ||||||||||||||
| C | 5-28V DC | 0.02 A @ 24 V DC | 62-84 dB @ 10 ft. | Continuous | 1 1/4" | 1 1/2" | 1" | Plastic | No | 2 | 0.13" | __ | 0000000 | 00000 |
| C | 5-28V DC | 0.02 A @ 28 V DC | 48-80 dB @ 10 ft. | Continuous | 3/4" | 1" | 3/4" | Plastic | No | 2 | 0.13" | UL Recognized Component | 0000000 | 00000 |
With 3 Wire Leads | ||||||||||||||
| C | 5-28V DC | 0.02 A @ 24 V DC | 62-84 dB @ 10 ft. | Continuous, Pulse | 1 1/4" | 1 1/2" | 1" | Plastic | No | 2 | 0.13" | __ | 0000000 | 00000 |
Surface-Mount Miniature Buzzers
B
Mounting Holes | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | Voltage | Current | Volume | Sound Pattern | Ht. | Wd. | Dp. | Material | Fasteners Included | No. of | Dia. | Each | |
With 2 Wire Leads | |||||||||||||
| B | 3-15V DC | 0.01 A @ 12 V DC | 90 dBA @ 30 cm. | Continuous | 1 3/4" | 1 1/8" | 7/8" | Plastic | No | 2 | 0.14" | 00000000 | 00000 |