Conventional Detector Base. 2-Wire. 4” . 24VDC – NS4-100

The NS4 base is an electronics free 4″ base featuring a plastic tamper-lock lug. Each base is equipped with a resistor. Models HSC-224R. HSC-220R and the HSC-221R are designed specifically for use with the Hochiki conventional models SLR-24H. SLR-24V. SLV-24. SLV-24N. SLV-24V. SLR-835. SLR-835H. DCD-135/190. The HSC-(X)R series is a 6″ base with two sets of Form “C” relay contacts. Models HSC-224R. HSC-220R and the HSC-221R are also approved for use with Hochiki’s previous conventional model DFE 135/190.