SDC 918 Series Indoor Digital ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$234.00
$164.23
SDC SDC 918 Series - Indoor Standalone Digital Keypads SDC-918

SDC 918 Series Indoor Digital Access Control Keypad with 500 User Capacity

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Model: 918U
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$234.00
$164.23
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SDC 918 Series Indoor Digital Access Control Keypad with 500 User Capacity

Professional Standalone Access Control Solution

The SDC 918 Series indoor standalone digital keypads provide comprehensive access control for single entry points supporting up to 500 users. Each user receives a personal identification number (PIN) with one to six digit codes that activate output relays to release electric door locks. Available in self-contained and Wiegand output models, these keypads feature 12VAC/24VAC operation with 30mA typical power consumption and compact 3";W x 4-3/4";H x 1-1/2";D dimensions.

Professional Features & Benefits

  • High User Capacity: Supports up to 500 individual user codes with personal identification numbers for comprehensive access management.
  • Dual Model Options: Available as 918 self-contained keypad or 918W Wiegand output model for integration with SDC IPPro® or most access control systems.
  • Flexible Power Requirements: 12VAC or 24VAC operation with efficient 30mA typical, 150mA maximum power consumption for reliable performance.
  • Compact Professional Design: 3";W x 4-3/4";H x 1-1/2";D dimensions with only 1/4"; wall projection for unobtrusive installation.
  • Heavy-Duty Construction: Thick stainless steel faceplate with tamper-resistant screws and moisture-resistant 12-key illuminated keypad for durability.
  • Advanced Output Control: Self-contained models provide 4 outputs (2 relay and 2 solid state) with timed or latching operation and assignable PIN-to-relay mapping.
  • Enhanced Security Features: Includes timed anti-passback, anti-tailgate protection, keypad tamper lockout, and request-to-exit (REX) functionality.
  • Wide Temperature Range: Operates from -4°F to +140°F (-20°C to +60°C) for reliable performance in various indoor environments.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Electronic: Yes
  • PDF:SDC Full Catalog: https://zensupply.com/content/pdf/lcn/CondensedHardwareBrochure
  • Power: 30mA Typical, 150mA Maximum
  • Product Category: Electronic Access Controls
  • Product Dimension: 3";W x 43/4";H x 11/2";D (1/4"; Wall Projection)
  • Product Group: Electronic Access Controls
  • Product Model: 918, 918W
  • Product Subgroup: Readers, Keypads and Credentials
  • Product Type: Keypads and Readers
  • Product Voltage: 12VAC, 24VAC
  • Series: 918 Series
  • Subcategory: Keypads and Readers
  • Temperature Range: Minus 4 Degrees F to +140 Degrees F (Minus 20 Degrees C to +60 Degrees C)

Professional Applications

  • Commercial Building Security Systems
  • Office Suite Access Control
  • Healthcare Facility Restricted Areas
  • Educational Institution Security
  • Retail Back-of-House Access
  • Industrial Facility Entry Points
  • Multi-Tenant Building Management

Tamper-Resistant Design

The 918 Series incorporates comprehensive tamper protection including tamper-resistant mounting screws, keypad tamper lockout functionality, and robust stainless steel construction. These features provide enhanced security against unauthorized access attempts and physical tampering in commercial environments.

Why Choose SDC Quality?

SDC 918 Series keypads deliver professional-grade access control with thick stainless steel construction and comprehensive security features including anti-passback and tamper protection. Operating reliably across a wide temperature range from -4°F to +140°F, these keypads are engineered for demanding commercial applications where dependable access control performance is essential.

Manufacturer Resources

SDC Full Catalog

Product Specs

Subcategory:
Keypads and Readers
Series:
918 Series
Product Group:
Electronic Access Controls
Product Subgroup:
Readers, Keypads and Credentials
Product Type:
Keypads and Readers
Commercial/Residential:
Commercial
Temperature Range:
Minus 4 Degrees F to +140 Degrees F (Minus 20 Degrees C to +60 Degrees C)
Electronic:
Yes
Power:
30mA Typical, 150mA Maximum
Product Model:
918, 918W
Product Voltage:
12VAC, 24VAC
Product Dimension:
3"W x 43/4"H x 11/2"D (1/4" Wall Projection)
Product Category:
Electronic Access Controls
Department:
Door Hardware

SDC 918U – Frequently Asked Questions

1) Will the SDC 918 keypad work outdoors or in an unheated garage or vestibule?
The 918 Series is an indoor keypad. Its rated operating range runs from -4 degrees F to +140 degrees F (-20 C to +60 C), so an unheated but sheltered lobby or vestibule is within spec, but an exposed exterior door is outside what this unit is built for. For a gate or a weather-exposed opening you want a keypad rated for outdoor use.
2) Can I run the SDC 918 keypad off my existing 12V door power supply?
Check whether that supply is AC or DC first. The 918 Series runs on 12VAC or 24VAC, drawing 30mA typical and 150mA maximum. Many lock power supplies put out 12VDC, which is not what this keypad calls for. The current draw is low enough that it adds almost nothing to a transformer already feeding a strike.
3) How many people can I put on an SDC 918 keypad, and how long can the codes be?
Up to 500 users, each with their own PIN of one to six digits. That is enough for a full tenant floor or a school wing without moving to a card system, and per-user codes mean you delete one employee's PIN instead of rekeying everybody when someone leaves.
4) I need a keypad that reports to my access control panel instead of running the door itself. What should I use?
Use the 918W Wiegand output model rather than the self-contained 918. The 918W sends Wiegand credential data to SDC IPPro or most access control systems, while the self-contained 918 makes the access decision on board and switches 4 outputs, 2 relay and 2 solid state, with timed or latching operation. Peer standalone keypads such as the Securitron DK-12 and the ACSI 1355-1 are also indoor digital keypads for a single opening, so if the design calls for panel-based decisions, the Wiegand model is the one to specify.
5) Can an SDC 918 keypad be used on an exterior door?
The SDC 918 series is an indoor standalone keypad, rated for -4 degrees F to +140 degrees F (-20 degrees C to +60 degrees C) in commercial indoor applications. The comparable keypads in the same class, the ACSI 1355-1 digital indoor keypad and the Securitron DK-12 stand alone digital keypad, are also indoor units, so an exterior gate or unprotected entrance calls for a keypad specified for outdoor exposure rather than any of these three.
6) Will an SDC 918 keypad work on a 12VDC power supply feeding my electric strike?
The SDC 918 series is specified for 12VAC or 24VAC operation, drawing 30mA typical and 150mA maximum. A DC-only supply is not the stated input for the keypad, so plan the power run around an AC source or a supply with an AC output for the keypad even where the strike itself is fed DC. Comparable standalone indoor keypads such as the Securitron DK-12 and the ACSI 1355-1 should be checked against their own input ratings before being dropped onto the same circuit.
7) Will an SDC 918 keypad stand up to a high-traffic commercial entry?
It's built as a commercial unit: thick stainless steel faceplate, tamper-resistant mounting screws, and a moisture-resistant 12-key illuminated keypad. Keypad tamper lockout shuts the pad down after repeated bad code attempts, so someone standing there guessing gets nowhere. The illuminated keys matter on a back-of-house or stairwell door where the lighting is poor.
8) Does the SDC 918 keypad handle request-to-exit and stop people tailgating in?
Both are built in. The 918 Series includes a request-to-exit (REX) input so a push button or motion sensor inside releases the lock without shunting an alarm improperly, plus timed anti-passback and anti-tailgate protection to stop one PIN being reused to walk a second person through behind the first. That combination is what a security integrator is usually adding a separate module for.
9) What finishes does the SDC 918 keypad come in to match the rest of my door hardware?
Five finishes, and both models are offered in all of them: 605 bright brass, 606 dull brass, 613 oil rubbed bronze, 625 bright chrome, and 630 satin stainless steel. On a building already standardized to 630 satin stainless, which most commercial openings are, that's the one to match.
10) What else can I use instead of an SDC 918 standalone keypad?
Two other standalone digital keypads worth looking at are the Securitron DK-12 from the DK12 Series and the ACSI 1355-1 from the 1355 Series, both indoor units of the same type. The SDC 918 is the one to pick when you want 500 users on a single door with four onboard outputs, or when you want the 918W variant to feed Wiegand data back to a panel later without changing the faceplate at the door.
11) Can one SDC 918 keypad control more than one lock or door?
The 918 Series is specified for a single entry point, but the self-contained 918 gives you four outputs, two relay and two solid state, and PINs can be assigned to a particular relay. So one keypad at a single opening can trigger more than one device, for example the strike plus an auxiliary function, with different PINs driving different outputs. It is not a two-door controller.
12) Is the ACSI 1355-1 keypad the same thing as an SDC 918?
They are both indoor digital keypads, but they are different products from different manufacturers. The ACSI 1355-1 belongs to the ACSI 1355 series. The SDC 918 series comes in two models, the self-contained 918 and the Wiegand output 918W, and the SDC unit is specified for 12VAC or 24VAC power. If a drawing or a facility standard calls out the 918 or 918W by model, the ACSI unit is a different part number and should be confirmed against the spec before it is ordered as a match.
13) We standardized on SDC 918 keypads in one building. What matters if a second building was built with a different brand?
The SDC 918 series supports up to 500 individual user codes with PIN lengths of one to six digits, and it carries features such as timed anti-passback, anti-tailgate, keypad tamper lockout, and REX. Codes programmed into an SDC 918 do not transfer to a different manufacturer's keypad; the ACSI 1355-1 and the Securitron DK-12 are separate standalone products with their own programming. For a fleet where one code list is maintained across doors, standardizing on the same series at every opening keeps the programming procedure identical for the maintenance staff.
How fast can I get the SDC 918U delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the SDC 918U come with a warranty?
Absolutely. The SDC 918U is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the SDC 918U?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the SDC 918U from ZenSupply?
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