Linear 212SE

Heavy Duty Numeric Keypad w/ Braille Keys

$291.99 See Price

In stock

SKU: 212SE
Your Current Selections:
  • Indoor/Outdoor keypad ideal for harsh settings
  • One-piece housing for surface-mounting to wall, post, or gooseneck.  Housing design also allows mounting to single-gang electrical box
  • 120 Users
  • Key press feedback via sounder and yellow LED
  • Built-in assignable sounder
  • Bi-color Red/Green LED indicates relay status
  • Non-volatile memory retains codes even if power is lost
  • 1-6 digit codes – digits can be repeated
  • Door relocks automatically
  • Two lever User Management
  • Durable metal Braille alpha-numeric keys
  • 4 on board programmable timed relays (Separate code for example to shunt an alarm, sound a siren/horn in another part of the building, or activate a handicap ramp for example)
  • Tamper loop functionality mode
  • Master Code must be entered to change user codes
  • Can program door to remain in unlocked position
  • Easy to program at the keypad
  • Functionality: Main relay controls any device requiring on/off switch — such as electric strike, or maglock. Request to exit input trigger
  • Accepts 10-30 Volts DC; 12-24 Volts AC – auto adjusting
  • Well written and easy to understand installation and programming instructions included
  • Optional printer interface


  • Current draw: 108 mA maximum (add 30 mA for each additional relay)
  • Operation voltage: 12-24 VAC/VDC – auto adjusting
  • Dimensions:
  • Temperature tolerance: -20F to 130F


  • Linear IEI warrants its products for two (2) years after the shipping date to be free from defects in material and workmanship, when they have been installed in accordance with the manufacturer’s instructions, and have not been modified or tampered with
Durable, very tough, and designed for use in harsh conditions or rough climate, the Linear IEI 212SE sealed environment keypad is a good solution for the intentional restriction of access of a door, space, gate, service, or barrier.  Instead of issuing keys or cards, you can provide staff, managers, and anyone requiring daily or temporary access a number sequence they can use for punching in on the keypad.  When their code matches a pre-programmed PIN, the keypad will relay a device with an on/off switch such as an electric strike or maglock to allow access.  Your IEI 212SE keypad also includes 4 on -board secondary relays, for user controlled operation of anything with an on/off switch, or to activate a siren.  Throughout the world, Linear IEI electronic keypads number in the thousands.  Companies and facilities rely on the second to none engineering, and capabilities of these keypads to offer protection of assets, reduce keys, and increase security, convenience, and efficiency.

3 (W) x 4.50 (H) x 1.55 (D) in.





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Customer Questions & Answers

  1. Q Are the contacts momentary or timed? answer now
    Asked by Ken Pierce on October 12, 2021 2:49 PM
    Answered by the admin

    The contacts are a timed relay. When a valid code is entered, the relay will close for a few seconds before they reopen to lock the door. 

  2. Q Are the keys backlit? answer now
    Asked by Michael VanSpall on December 5, 2018 11:13 PM
    Answered by the admin

    No, they are not, these are pressed metal keys. 

  3. A No this lock does not have the ability to have readable audits. You will need an access control system to complete this function.
  4. Answered by the admin

    While the 212SE is an excellent keypad for the requirements that you need the 212R will be better suited to your request. However, for both of them -20F is the lowest operational temp before it begins to be adversely affected by the cold. While it does not ruin the keypad it will cause it to slow in the response time the colder it gets and possibly even shut it down depending on the the cold and length of time exposed. To help combat any additional issues that would compound the cold such as rain or ice a weather guard is recommended. 

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