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 HL-951T1/T2/R1/R2-SQ 900MHz RF Transmitters & Receivers — Specification Sheet

    September 08, 2026 2 min read

    Specification sheet for the SECO-LARM ENFORCER 900MHz HL-Series RF transmitters (HL-951T1-SQ, HL-951T2-SQ) and receivers (HL-951R1-SQ, HL-951R2-SQ).

    💾 Download Original PDF 🛒 View Product
    Full text manual (for reference)

    Specification sheet for the SECO-LARM ENFORCER 900MHz HL-Series RF transmitters and receivers: HL-951T1-SQ (1-button pendant), HL-951T2-SQ (2-button pendant), HL-951R1-SQ (1-channel receiver), and HL-951R2-SQ (2-channel receiver).

    Overview

    The ENFORCER 900MHz (917MHz) HL-Series RF transmitters and receivers use digital modulation for improved immunity to interference, better signal penetration through obstructions, and a significantly longer range of up to 1,800ft (550m) line-of-sight. Transmitters are pocket-sized pendants with ultra-low power consumption for long battery life using easy-to-find coin-type CR-2032 batteries.

    Features

    Transmitter Features

    • Patented slim-style case design
    • Consistent transmission as temperature varies and battery voltage drops
    • IP68 waterproof, up to 10 years battery life (based on ten 1-second button presses per day)
    • 917MHz frequency with armor-piercing technology for improved penetration; 868MHz also available (CE)
    • Improved immunity to background interference

    Receiver Features

    • Wide voltage range: 10~24 VAC or 9~48 VDC
    • PCB antenna — no external antenna to install, adjust, vandalize, or damage
    • Five individually programmable output modes
    • Up to 99 button codes per channel, with memory capacity of 99 transmitter codes per channel
    • Programming by switch — no need to cut jumpers
    • LED indicates RF reception and programming functions
    • Compatible with all HL-series SECO-LARM transmitters of the same frequency
    • OEM and private label available

    Receiver Specifications

    Spec HL-951R1-SQ HL-951R2-SQ
    Operating frequency 917MHz (868MHz variant available with CE)
    Memory capacity 99 transmitter button codes per channel
    Operating voltage 10~24 VAC, 9~48 VDC
    Standby current 8mA@12VDC / 5mA@24VDC / 2mA@48VDC (typical)
    Active current 100mA@12VDC / 50mA@24VDC / 25mA@48VDC per channel
    Relay type Independent, sequence, access control
    Relay output modes 1~99 sec momentary (default 1s), 1~99 min momentary, toggle, latch, follow (validity)
    Relay contacts 1 2
    Relay rating Form C 10A@14VDC
    Digital display 2-digit, 7-segment LED
    Connectors Screw terminals, +, -, with NO/NC/COM per relay
    Operating temperature -40°~167°F (-40°~75°C)
    Dimensions 3 15/16"x2½"x1 3/16" (100x63x30 mm)

    Actual operating range will vary depending on installation and environment. The 1,800ft (550m) figure is the maximum line-of-sight range achievable with two chained receivers/repeaters.