Showing 145–156 of 156 results

VAD-4 – Dial-up Remote Control

The VAD-4 is a user programmable telephone voice/pager auto-dialer and remote control. It features four optically isolated status inputs, four SPDT relay outputs, 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 voice message.