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    SECO-LARM SK-B241-PQ — ENFORCER Bluetooth Access Controller Mullion Keypad with Proximity Reader Specifications

    September 08, 2026 2 min read

    Specifications and features for the SECO-LARM ENFORCER® SK-B241-PQ Bluetooth Access Controller Mullion Keypad with Proximity Reader — unlock with keypad code, proximity card, or smartphone app.

    💾 Download Original PDF
    Full text manual (for reference)

    Specifications and feature overview for the SECO-LARM ENFORCER® SK-B241-PQ Bluetooth Access Controller Mullion Keypad with Proximity Reader — an app-based, weatherproof access controller with three ways to unlock: keypad code, proximity card, or smartphone app. All user data is stored locally on the device (no cloud, no internet exposure).

    Key Features

    • No codes to remember — visual, app-based programming via the SL Access™ app
    • Supports up to 1,000 users plus 1 administrator
    • Controls doors, gates, lighting, machinery, and other devices — not just doors
    • All data secured locally on the device — no internet exposure
    • Multiple user types: permanent, scheduled, temporary, or limited-use
    • Output modes: timed relock (1–1,800 sec), continually locked, continually unlocked, or toggle — individually customizable per user
    • Hold-open function via code, card, or app
    • AES 128 encryption, passcode-protected Bluetooth
    • Authorized user monitor to guard against unauthorized additions
    • Audit trail: most recent 1,000 events, searchable and downloadable
    • Wrong-code lockout and tamper alarm output
    • Multilingual app: English, Portuguese, Spanish, French, German, Russian, Vietnamese, Chinese (Traditional/Simplified)
    • Easy backup/restore for off-device storage or replication across devices
    • IP65 weatherproof rating and app-based setup — no wiring configuration needed

    Three Ways to Unlock

    • Via the backlit keypad (enter code)
    • Via proximity card (EM 125kHz)
    • Via the SL Access app (Bluetooth, requires iOS 11.0+ or Android 5.0+)

    Specifications

    Spec Value
    Access modes App / keypad / proximity card
    Users 1,000 users / 1 administrator
    Operating voltage 9~25 VDC
    Current draw (standby) 50mA@12VDC, 28mA@24VDC
    Current draw (active max) 58mA@12VDC, 33mA@24VDC
    Relay output Solid state, Form C, 2.5A@30VDC
    Tamper output 50mA@30VDC
    Output modes Timed relock (1~1,800s), continually locked, continually unlocked, toggle
    Inputs Egress (N.O. ground), Door sensor (N.C. ground)
    Electrical protection Short circuit, electro static discharge, reverse polarity, relay contact protection
    Keypad Backlit
    Proximity reader EM 125kHz
    Bluetooth radio Bluetooth Low Energy (BLE) 4.2
    IP Rating IP65 Weather resistant
    Enclosure material Zinc-alloy
    Operating temperature -4°~122° F (-20°~50° C)
    Weight 15.8 oz (477g)
    Dimensions 6" x 1-3/4" x 7/8" (152 x 45 x 23 mm)

    App-Based Management

    • On-Device Security: AES 128 encryption, all settings and passcodes stored on the device, configured by the administrator.
    • Administrator Settings: Set all device parameters, manage users, view audit trail, backup/restore.
    • User Management: Add, view, import/export, and customize individual user settings, scheduling, and output settings.
    • Audit Trail: View the most recent 1,000 events, searchable by user and type, downloadable for archive.
    • Unlock with App: Users can unlock the door with the app, keypad, or proximity card.

    Download the SL Access™ app for iOS 11.0+ or Android 5.0+.