Features

•  'Class Change' Screen Printed Cover (1)
•  96dB(A) sound output @ 1m. (1)
•  Class Change Time Clock (4)
•  Directly Power and Control 24V Sounder/Bell Circuits (1)
•  Directly Power and Control 24V Sounder Circuits (1)
•  Screen Printed 'Class Change' Label (1)
•  Tamper Proof (1)
•  Two volume levels (high and low) (1)