The VAD-4 is a user programmable four status input multi-number voice/pager auto dialer. The VAD-4 is equipped with four optically isolated status inputs, two temperature sensor ports, power failure input and unbalanced stereo silence sensor, which when tripped, will sequentially dial a pager and/or up to four different phone numbers and play back a user recorded message corresponding to the tripped input. The VAD-4 is also provided with four SPDT one amp relays for the control of external equipment and a separate SPDT alarm tally relay. The VAD-4 can store up to four 32 digit phone numbers and one 32 digit pager phone number which may be associated with any or all of the inputs.
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