EVA-STB-SCI is a 4 inch mounting base with short circuit isolator that isolates short-circuit to protect a detector failing. When short circuit is detected, LED indicator illuminates and the short-circuit area is isolated automatically. Upon removal of the short condition, the area is automatically connected to go back to the normal operating status. EVA-STB-SCI can be mounted to 3-1/2” octagonal electrical box, or to 4” square or 4” octagonal electrical box when using STBA-ADP optional mounting adaptor. The base is supplied with 3 terminals as standard. The 12 – 20 AWG field wire can be connected to the terminals. EVA-STB-SCI contains a locking screw to avoid unauthorized removal of detectors.



  • Short circuit isolator base
  • UL Listed Sounder base
  • Compatible to Nittan’s UL Listed detectors
  • Supplied with one LED indictor of S/C condition
  • Contains a locking screw for tamper protection
  • Current Consumption 0.12 mA (Stanby), 22 mA
  • loop

  • Reduces wiring cost

Compatible Detector Models

EVA-PYAddressable Photoelectric Smoke Detector
EVA-PYHAddressable Multi-sensory Detector
EVA-H2Addressable Heat Detector
EVA-DPHAddressable Dual Optical Heat Detector

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