VK-LDB-3 - Viking Electronics Loop and Ring Detect Board for | Aztek Computers
29+Years
SKU: BMFGORBN2L |  Mfg. Part: VK-LDB-3  | UPC: 615687221862  | 
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VK-LDB-3 - Viking Electronics Loop and Ring Detect Board for Ring and Line in Usein. in. Contact Closures (During Ringin

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Product Overview

The LDB-3 Advanced Loop Detector monitors an analog phone line for ringing or an off hook condition. A built-in relay can be activated when either of these conditions are detected. This is ideal for monitoring line status or for providing a visual indication of such. The LDB-3 s disable input is ideal for two-button emergency phones such as Viking s E-1600-20A allowing in. Infoin. button calls to be placed without activating the relay (turning on the emergency strobe light camera etc.) Three DIP switches are provided for turning ring detection on or off off-hook loop detection on or off and for selecting a ring cadence mode which allows the relay to follow ringing or to remain activated during the off time of standard ring cadence. The LDB-3 comes complete with a 12 VDC power adapter and can also provide switched 12VDC .35 Amp output to power external lights etc. during ringing and/or off-hook conditions. Features Include:Detects ring voltage and off hook loop current On/off switches for ring detection and off hook/loop detection Screw terminal connections Selectable ring cadence mode (relay can remain on between rings) Wall mountable with foam tape (included) or screws (not included) Switched 12V DC output (follows relay activation for powering strobe lights cameras etc.) One set of (NO) normally open and (NC) normally closed relay contacts provided Disable input ideal for use with two-button emergency phones (E-1600-20A) will not activate relay on in. Infoin. calls

Expert Overview

The Viking Electronics VK-LDB-3 is an Advanced Loop Detector designed to monitor an analog phone line for ringing or an off-hook condition. It provides a contact closure during these events, enabling integration with other systems. This device is suitable for businesses that require automated responses or visual indications based on phone line status, such as triggering security cameras, strobe lights, or "in use" indicators. It addresses the need for reliable detection and signaling in environments like emergency call stations, security monitoring, or general facility management. The unit features three DIP switches for configurable ring and off-hook detection, including a selectable ring cadence mode. A disable input allows for specific use cases, such as preventing relay activation during "Info" calls from two-button emergency phones like Viking's E-1600-20A. The LDB-3 includes a 12 VDC power adapter and offers a switched 12VDC output to power external devices.

Technical Specifications

  • Viking Advanced Loop Detector loop detect board for ring and line "in use" contact closures
  • Provide a contact closure during ringing and/or off-hook
  • Monitors an analog phone line for ringing or an off hook condition
  • A built-in relay can be activated when either of these conditions are detected
  • This is ideal for monitoring line status or for providing a visual indication of such
  • Disable input is ideal for two-button emergency phones, such as Viking's E-1600-20A, allowing "Info" button calls to be placed without activating the relay (turning on the emergency strobe light, camera, etc.)
  • 3 DIP switches are provided for turning ring detection on or off, off-hook loop detection on or off and for selecting a ring cadence mode which allows the relay to follow ringing or to remain activated during the off time of standard ring cadence
  • Complete with a 12 VDC power adapter
  • Can also provide switched 12VDC .35 Amp output to power external lights, etc. during ringing and/or off-hook conditions
  • Applications: control a strobe or beacon light for ring indication, provide relay closures on off-hook, trigger a security camera, trigger a tape recorder, phone "in use" indicator
  • Detects ring voltage and off hook loop current
  • On/off switches for ring detection and off hook/loop detection
  • Screw terminal connections
  • Selectable ring cadence mode (relay can remain on between rings)
  • Wall mountable with foam tape (included) or screws (not included)
  • Switched 12V DC output (follows relay activation for powering strobe lights, cameras, etc.)
  • One set of (NO) normally open and (NC) normally closed relay contacts provided
  • Disable input, ideal for use with two-button emergency phones (E-1600-20A), will not activate relay on "Info" calls
  • Made in the USA
  • 1 Year manufacturer's warranty
  • Power: 120V AC to 12V DC adapter provided

Product Details

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  • Viking Electronics
  • VK-LDB-3
  • B001EKS9WG
  • 615687221862
  • New
  • 1.26 lbs
  • 7 X 5 X 5
  • Jul 23, 2026
  • Oct 29, 2021
Product Identifiers: Brand: Viking Electronics • Part #: VK-LDB-3 • UPC: 615687221862 • ASIN: B001EKS9WG

Frequently Asked Questions

What types of phone line conditions can the LDB-3 detect?

The LDB-3 is designed to detect both ring voltage and off-hook loop current on an analog phone line. These conditions can be individually enabled or disabled via DIP switches.

What is included with the LDB-3 for installation?

The LDB-3 comes complete with a 12 VDC power adapter and foam tape for wall mounting. Screws for mounting are not included.

Can the LDB-3 be used with two-button emergency phones?

Yes, the LDB-3 features a disable input specifically designed for use with two-button emergency phones, such as Viking's E-1600-20A. This allows "Info" button calls to be placed without activating the relay.

What kind of relay contacts are provided?

The LDB-3 provides one set of normally open (NO) and normally closed (NC) relay contacts, allowing for flexible integration with various control systems and devices.

VK-LDB-3 - Viking Electronics Loop and Ring Detect Board for Ring and Line in Usein. in. Contact Closures (During Ringin

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$72.43