Doorking ITEM: 1812-081


Doorking ITEM: 1812-081
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  • Free shipping on most items over $200
  • We have 15+ years of industry experience
  • GSA, Net 30 and purchase orders available


Doorking 1812 Single Family Residential Intercom System (CLASSIC SUFRACE MOUNT)

The model 1812 is a unique telephone intercom system that allows homeowners to use their telephone as an intercom to speak to a guest at a front door or gate without the necessity to pay for an additional telephone line at their home.

  • PC Programmable.
  • Distinctive double ring identifies visitor calls from regular calls.
  • Call waiting.
  • Call forwarding.
  • 3 preprogrammed call out telephone numbers
  • "Do Not Disturb" time zone.
  • Hold open time zones.
  • Built-in time clock.
  • Entry code time zones.
  • "Flash" entry code.
  • LED lighted keypad.
  • 2 relays for door/gate control.
  • Connects in series with the residential phone line. By-pass switch provided.
  • EEPROM Memory.
  • Stores up to 3 call forwarding numbers.
  • Full duplex communication
  • 50, 4-digit entry codes.
  • Electrical requirements: 24 VAC, 20 VA
  • UL listed power transformer provided
  • Communication: Full duplex Hands free
  • Operating temp: 10F to 145F
  • Capacity: Single line Two relays allow control of two doors or gates
  • Call waiting
  • Call forwarding
  • Three (3) preprogrammed call phone numbers
  • Built-in clock/calendar
  • Do not disturb time zone
  • Four (4) hold-open time zones
  • Entry code time zones
  • Call forwarding time zone
  • Flash entry code
  • Special intercom mode for use with PBX and KSU phone systems
  • Programming methods: System keypad, Touch-tone telephone, Auto program software
  • Surface Mount Model: 6.25"H x 10"W x 5.25"D
  • Warranty: 2 year limited factory warranty
  • Sim Card/ Cellular option requires additional hardware

All in stock orders typically ship the same business days or within 1-2 business days.  Cut off for same day shipping is 2:30PM Central Time.


Items with lead times typically ship in 4-7 business days.


Orders with free shipping may have longer lead times due to those items being shipped the most economical way.  Free shipping on most orders over $195.00 does not include gate operators, loop sealant, and any extreme length or weight items

Our return policy lasts for only 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund. Some items such as Gate Operators or custom parts may not be returnable or carry a restocking fee if returned.

Read return policies

Protec Controls accepts purchase orders please contact us.

NET 30

We also support Net 30 terms on our website for easy ordering. Please fill out the form to the right with your company information and we will get your account setup to place Net 30 orders.


Protec Controls accepts GSA SmartPay cards along with all major credit cards. For government quotes and purchase orders please email

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