Electronic Rotary Latch


Southco, Inc.  has recently expanded its R4-EM Electronic Rotary Latch product class to include a version suitable for outdoor environments. With its corrosion-resistant plated steel and stainless steel construction and fully-sealed internal actuator, the R4-EM Outdoor provides reliable electronic locking that is resistant to moisture and dust. The embedded electronic control allows for easy integration with an external control system, and flexible, concealed installation provides vandal-resistance and accommodates a variety of outdoor applications. 

With a high working load and ultimate load, the R4-EM Outdoor ensures reliable operation in demanding applications. Additionally, the R4-EM Outdoor accepts control inputs from any access control device and delivers optimal design flexibility in challenging environments. Field Applications Engineer Sonny Van Ngo adds, “Southco’s R4-EM Outdoor Electronic Rotary Latch enables electronic access in environments where it was previously not possible. The R4-EM Outdoor is an excellent option for outdoor applications where a moisture- and corrosion-resistant electronic latch is required.”


  • suitable for outdoor environments
  • corrosion-resistant plated steel
  • stainless steel construction 
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