EXTRA-LOUD MINI PIEZO SIREN

CAT# ES-10
$4.50 each
10 or more $4.00 each
Quantity:  
 
Small, painfully-loud two-tone piezo siren for auto or home security devices. Operates 6-12 vdc, 110 ma. 108dB output (30cm). 1.84" x 1.53" x 0.88" high black plastic body. Two mounting holes on diagonal 1.80" centers. 3" wire leads.
Average Customer Review:  (13 Reviews) Write A Review

Customer Comments

Average Customer Review:  (13 Reviews) Write A Review

A customer from MARSHALL, MN US
Wow - they weren't kidding about deafening!
I swapped out the buzzer on my water alarm kit (All Electronics P/N MK-108) with this piezo siren. The result is a siren that can be heard very clearly two floors up. This unit has the ability to put out a louder, more irritating, sound than units twice it's size. The very low power consumption is the icing on the cake.

A customer from Fair Oaks, CA
anybody know currents at various voltages?
can any of you that have one of these report the current draw at various voltage drive levels? That would be really useful to know.

thanks

A customer from US
Use a decoupling cap if you use a resistor
To the last poster: you cannot put a resistor in series to drop the voltage. Piezos have capacitance which is charged - which results in motion of the ceramic material - which is what you hear. Also, the chip which drives the piezo has a minimum operating voltage to function - which is not met with a resistor in series - due to huge voltage drops as the piezo charges.

To lower the volume, use a REGULATED supply of lower voltage, or if you use a series resistor - a cap across the module - consisting of at least 100 uF - paralleled by a 1 uF ceramic.

These approaches will allow you to get quite a dynamic range.

A customer from Asheville, NC
Perfect Recovery siren
Our team used this for the recovery siren in our near-space balloon payload. (Along with a GPS Radio Tracker) We probably would never have found it up in a tree without it. Survived two flights so far, each more than 20 miles up in the atmosphere!

A customer from Vatican City USA
Resistor deoes work
I have tried it wit a series resiorsistor and monitored the current, clealry adding the resist will work but it reduces the current. I sampled at 20kH and saw no inrush.