http://lyndsaycambridge.com/tag/editing http://beccajcampbell.com/2013/02/08 
HJ-650 4-28VDC Panel Mount Sounder/Siren
- 4-28VDC operating range
- 15mA @ 28VDC
- Continuous tone
- 95dB SPL (1W/1M)
- Fits 1-1/8″ diameter opening
- Screw terminals
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