Electro Standards Laboratories Datasheets for Modular Connectors and RJ Connectors

Modular connectors and RJ connectors includes two similar, yet distinct styles of connectors. Modular connectors are made of "plug-in units" which can be added together to make the system larger, improve the capabilities, or expand its size. Registered Jack (RJ) is a telephone and data jack application specific connector registered with the FCC.
Modular Connectors and RJ Connectors: Learn more

Product Name Notes
Harmonica Adapter -- 410034 Harmonica, 50-Pin Male to 6 RJ-45's, AT&T Wiring
MMJ Adapter -- 891208
MMJ Adapter -- 930912
MMJ Adapter -- 931008
MMJ/DB25 (M)
MMJ Adapter -- 900425
MMJ Adapter -- 950231
MMJ/DB25(F)
MMJ Adapter -- 941024 MMJ/DB9(F)
Modular Coupler -- 407283 MMJ/MMJ Digital Coupler (Cross Wired)
Modular Coupler -- 407262 RJ-11/RJ-11 Coupler (Cross Wired)
Modular/ATP HP Connector Adapter -- 308321 RJ-11/RJ-12 to HP ATP 3-Pin Male
Modular/ATP HP Connector Adapter -- 308322 RJ-11/RJ-12 to HP ATP 5-Pin Male
Modular Coupler -- 407273 RJ-12/RJ-12 Coupler (Cross Wired)
Modular Coupler -- 407274 RJ-12/RJ-12 Coupler (Straight Wired)
Modular/ATP HP Connector Adapter -- 502991 RJ-45 to HP ATP 3-Pin Male
Modular/ATP HP Connector Adapter -- 308324 RJ-45 to HP ATP 5-Pin Male
Modular T Connector -- 308327 RJ-45/2-RJ-12 Splits four pair to two pair
Modular Coupler -- 407293 RJ-45/RJ-45 Coupler (Cross Wired)
Modular Coupler -- 407286 RJ-45/RJ-45 Coupler (Straight Wired)
Modular Coupler -- 407286 RJ-45/RJ-45 Panel Mount Feed Thru AMP
Modular Coupler -- 407279 RJ-45/RJ-45/RJ-45 Tee Adapter Plug to two Jacks
Harmonica Adapter -- 410026 Harmonica, 50-Pin Male to 8 RJ-11's, USOC Wiring
Modular T Connector -- 502980 RJ-45 Male/2-RJ-45 Female, 10 Base T
Modular Coupler -- 407285 RJ-45/RJ-45 Panel Mount Feed Thru