Zygo Model 4 Emergency Call Alarm
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DISCONTINUED. (Verified 04/2009) RETAINED IN DATABASE FOR REFERENCE. Zygo Model 4 Emergency Call Alarm is a signalling device that emits a piercing, fast- pulse, intermittent tone. A single switch (not included) is used to activate the alarm. POWER: Two 9-volt batteries. DIMENSIONS: 2.5 x 4.6 x 3.6 inches. WEIGHT: 9.5 ounces.
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