
3700 Sagamore Parkway North . PO Box 5729 . Lafayette, IN 47903 USA . Ph: 765-423-1505
ELECTRONIC VOICE REACTION TIMER
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System Description:
The Electronic Voice Reaction Timer Model 63040A is a dual channel voice activated relay. Each
channel is independent and may be activated by either a piezo microphone, a throat microphone,
or a manual pushbutton all of which are supplied with each unit. A microprocessor is employed to
provide overall control of the unit's functions. It operates in four different modes, which are
Latched or Non-latched and Sequential or Non-sequential. Up to three relay outputs can be used
with external devices, such as counters, timers, or external stimulus devices. This unit uses
photomos relays to prevent high frequency noise from causing false triggering of the analog
circuitry, as can happen with solenoid relays.