Mallory Sonalert Steady Continuous Tone Electronic Alarm Signal SC628 6-28 VDC

SONALERT Mallory SC628 6-28 VDC Audible Signal Transducer with Volume Control

LOT OF 3 NIB MALLORY SC628AP SONALERT ELECTRONIC SIGNAL 6-28 VAC/VDC, 2900 HZ

Sonalert SC628 28VDC Transducer

Sonalert SC628R Alarm FNOB

SONALERT SC628ANJ SIGNALING DEVICE 6-28VAC 4-30MA

SONALERT SC628NR Piezoelectric buzzer, Transducer, 6-28 VDC 6-23 mA

SC628ANP Sonalert Mallory Warning Horn