SAMSUNG - SBT-12-05-S - Buzzer, Constant Tone High Pitch, 2VDC-6VDC.

SAMSUNG - SBT-12-05-S - Buzzer Audio alarms and buzzers.

Constant tone High Pitch Buzzer

Operting Voltage: 2VDC-6.5VDC. Best @ 4-6.5 VDC

Sound drops past 7VDC 

Current: 30 mA

Min. Output: 85 dBA/10cm

Frequency: 2300 +/-300 Hz

Tone Nature: Single

Operating Temperature:  -40 to 85C

Mount: PCB solder.

Material: Noryl SEI GFN2

Dimensions: 1/2" D round x 0.36" high, 2 pin, solder terminal type leads.

alternate: MG SBT1205S

A Gould replacement part.