HSS-L2C-A Recessed / Concealed Contact

HSS Series | UL 634 LEVEL 2

   UL-634 Level 2 High Security

   Installs in standard ANSI door cut out

   Includes Removal Tamper – required
          for UL634 High Security applications

   Compatible with all control panels

 The HSS L2C-A SERIES is resistant to:



.magnetic .tamper




HSS-L2C-A  |  UL 634 Level 2 Recessed / Concealed Contact (Fits Standard ANSI Cutout)

The L2C series is the only concealed contact on the market listed to UL634 Level 2 High Security Standards, and the only concealed devices to incorporate patent pending removal / tamper circuits. The L2C offers models that can be installed in either a 1” diameter hole, or in a standard ANSI door cutout.




  • Only concealed contact to meet UL 634 Level 2 High Security Standard
  • Incorporates patented removal (pry) tamper circuit
  • Installs in one inch diameter hole or standard ANSI door cut out
  • ANSI model a retrofit / upgrade to old 2757 / 67 BMS contacts American made, built with MAGNASPHERE® switch technology
  • Resists permanent contact welding (power surges, stun guns, lightning
  • Compatible with all control panels
  • Highest level of security for every installation
  • Competitively priced


Size:  1  1/4″ x 4  7/8″ x 1  1/8″
Max Gap: .125″ [.0625″ Gap for UL 634 Level 2 Installation]
Housing: Brass (Magnet and Switch)
Max Current:     0.25A Resistive
Max Voltage:     30 VDC
Max Power:      .25 W
Configuration:   Single or Dual Alarm Contact(s), Closed Loop, Closed Loop Tamper Circuit
Wire Lead: #22 AWG, Solid Color-Coded,
12″ L (30 cm)
Operation Temp: -40° C to +80°C
Wiring Schematics / Part No.

Wiring schematics for the following part numbers are available on the Downloads page in this section:
  • HSS-L2C-101-A HSS-L2C-111-A


MODEL HSS-L2C-A Recessed / Concealed Contact 
1 1/4″ x 4 7/8″ x 1 1/8″  (Fits Standard ANSI Cutout)



MAGNASPHERE products are covered by U.S. and International Patents. Click to review each patent at the USPTO Patent Full-Text and Image Database.

US Patents