Menu
0
0

Your Cart is Empty

Add description, images, menus and links to your mega menu

A column with no settings can be used as a spacer

Link to your collections, sales and even external links

Add up to five columns

  • Add description, images, menus and links to your mega menu

  • A column with no settings can be used as a spacer

  • Link to your collections, sales and even external links

  • Add up to five columns

    • Home  / Product Manuals & Documentation
    Previous  / Next

    SECO-LARM SD-R400-BQ — ENFORCER Microwave RTE Sensor Specifications

    September 08, 2026 2 min read

    Specifications for the SECO-LARM ENFORCER SD-R400-BQ Microwave RTE Sensor, a compact no-touch request-to-exit motion sensor with adjustable relay output timer.

    💾 Download Original PDF
    Full text manual (for reference)

    Specifications for the SECO-LARM ENFORCER SD-R400-BQ Microwave RTE (Request-to-Exit) Sensor — a compact motion sensor with an adjustable output timer, designed to connect to an access control keypad or gate opener to trigger a no-touch exit/entry.

    Key Features

    • 12–24 VDC operating voltage.
    • 24.150GHz microwave Doppler technology.
    • 10 ft (3m) sensing range, adjustable.
    • Adjustable relay output time: 1–33 seconds.
    • Small size allows for a wide range of applications; universally compatible — install above doors for no-touch ingress/egress.
    • More consistent detection in large areas and over a wide range of temperatures than PIR-based sensors.
    • Indoor use only.

    Specifications

    Model SD-R400-BQ
    Operating voltage 12–24 VDC
    Current draw (standby) 23mA@12VDC / 14mA@24VDC
    Current draw (active) 39mA@12VDC / 21mA@24VDC
    Sensor frequency 24.150GHz
    Sensor range 3′–10′ (0.9–3m), adjustable
    Sensor angle Vertical 0°–90°; Horizontal ±30°
    Detection angle Front/back 20°–30°; Left/right 60°–70°
    Min. detection speed 5 cm/s
    Output relay 2A@30VDC (0.5A@125VAC) dry relay, NO/NC/COM
    Relay output time 1–33 seconds
    Mounting height 6′–10′ (1.8–3m)
    Cable length 8′ (2.5m)
    LED indicator Red on relay activation
    Case material Black ABS and polycarbonate
    Operating temperature -4°–131°F (-20°–55°C)
    Dimensions 3-1/8" x 2-3/8" x 2-1/8" (80 x 60 x 54 mm)
    Weight 2.5 oz (70g)

    Typical Use

    Mount the sensor above a door (recommended mounting height 6–10 ft), connect it to an access control keypad, gate opener, or any device with an egress input, and adjust the relay output timer (1–33 seconds) so the door or gate stays released long enough for someone to pass through hands-free.

    Warranty & Notice

    SECO-LARM's policy is one of continual development; specifications and prices are subject to change without notice. SECO-LARM is not responsible for misprints.

    SECO-LARM U.S.A., Inc. — 16842 Millikan Avenue, Irvine, CA 92606 | (949) 261-2999 / (800) 662-0800 | www.seco-larm.com