Nippon Dry-Chemical NHE-Oki 4401-OKB Analog Addressable Opto-Electric Smoke Detector With 3312-OKB Base Frame The Nippon Dry-Chemical NHE-Oki 4401-OKB is a low profile addressable opto-electric smoke detector. Nippon Dry-Chemical NHE-Oki 4401-OKB by means of a special protective mesh it is ensured that smoke can enter the detector easily whilst accessibility to insects and airborne contaminants is eliminated. The Nippon Dry-Chemical NHE-Oki 4401-OKB rated voltage/current DC28V / 4.3mA. Quiescent current is 0.3A and operation voltage range: DC12-30V. Operation temperature range: -25degC to +70degC
