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August 31, 2026 4 min read
Owner's Manual for the United Security Products Model AD-2001 Automatic Voice/Pager Dialer System with 2-way listen-in verification.
Owner's Manual and Operating Instructions for the United Security Products Model AD-2001 Automatic Voice/Pager Dialer System with Verification — a comprehensive stand-alone or alarm-panel-integrated dialer that calls up to 4 numbers with prerecorded voice messages, 2-way listen-in verification, and pager support.
The AD-2001 combines busy-line and no-answer detection with prompt transmission of up to 2 prerecorded messages, delivered sequentially to as many as 4 standard telephones, cellular phones, voice pagers, and/or numeric pagers. It operates with any alarm system via dry contact or voltage-activation sensors, or as a stand-alone device via a standard telephone jack.
Removing power or switching to OFF mode does not erase programming.
Important: Before programming the dialer to call police, fire department, or 9-1-1 directly, you must obtain approval from those agencies.
| Setting | Options | Factory Default |
|---|---|---|
| T-LINE | Tone / Pulse | Tone |
| PBX | On/Off + digit for outside line | Off |
| ATTEMPTS | 1-9 calls per number | 2 |
| MESSAGE (repeats) | 1-3 repeats per call | 2 |
Choose one of 4 OGM options:
To record: select "PROGRAM: OGMS" → "1(YES)" → select your option → press and hold "R" to record (speaking 6-12 inches from the mic) → release when done → play back and accept, or re-record.
Tip: If you enter a wrong choice at any point, press "M" repeatedly to return to Program Mode, then navigate back to fix it.
Test mode checks stored information without making a real call (max 1 attempt/number, 1 OGM playback). Cycle "M" to "TEST: T-LINE," "TEST: CHANNEL(S)," and select channels to test (or "3" for both). Always follow up by connecting to the phone line and testing again in Operate mode — and notify anyone you're calling that it's just a test.
In Operate mode, the dialer monitors both enabled channels. Upon a valid alarm condition, it dials each programmed number in sequence for the preset number of attempts, delivering the message 1-3 times per successful connection. After 8 busy signals or unanswered rings, it moves to the next number. Numeric pager locations never receive voice messages.
If a channel is activated during exit delay, the alarm is ignored until the delay expires. On entry delay, the dialer waits before dialing — press "M" during this window to abort and return to OFF mode. Delays range 1-199 seconds.
| Power source | 9-18VDC |
| Current (standby / dialing) | 28mA typical / 100mA max |
| Activation modes | N.C. (activates on "open"), N.O. (activates on "close"), Voltage (N.C. min +5VDC/max +28VDC; N.O. min 0VDC/max 0.25VDC) |
| Max digits for outgoing numbers | 50 |
| Operating temperature | -18°C to 55°C (0°F to 130°F) |
| Dimensions / Weight | 6 x 4 x 1.5 in / 10 oz |
| Case / Color | ABS / White |
| Warranty | 1 Year |
United Security Products, Inc. — Phone: (619) 597-6677 | Fax: (619) 455-0036 | Email: usp@ix.netcom.com | Mon-Fri, 7:30 AM - 4:00 PM PST
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