Loop Repeaters

Servotech offer a range of Transtech Signal Conditioners. The LRS and LRD series of modules are commonly termed “Loop Isolators”. They are typically connected into a current loop, in series, and repeat the 4-20mA on their output terminals, thus supplying a 4-20mA or 1-5Vdc signal to another load.


  • Galvanic Isolation to 2500 Vrms.
  • Compact Din Rail or G Rail Mounting.
  • External Monitor Points (40-200mV).
  • Self Tuning to connected load (automatic compensation for loop volts and load).
  • EMI/RFI barrier, the LRS, LRD may improve interference from such sources.


  • LRS – 4-20mA (Single).
  • LRD – 4-20mA (Single or Dual) (may be linked for single input).


  • LRS – 4-20mA or 1-5Vdc.
  • LRD – 2 x 4-20mA or 2 x 1-5Vdc or 1 x 4-20mA and 1 x 1-5Vdc.