Nittan Sensortec Conventional Optical Smoke Detector (ST-P-OM)

The Nittan ST-P-OM is a low-profile conventional photoelectric (optical) smoke detector from the Nittan Sensortec range, for use in conventional fire alarm systems.

It combines an ultra-fine, chemically etched stainless-steel insect screen with Nittan's own optical chamber design. This gives high resistance to chamber contamination and to false alarms caused by insects and airborne contaminants, while meeting the smoke detection requirements of EN 54-7. An Omniview 360° LED can be seen from any angle, and the detector can drive a remote LED indicator or auxiliary function as standard.

Key features

• High resistance to false alarms and chamber contamination
• Omniview 360° LED
• Low profile design
• Low monitoring current
• Non-polarised terminals
• Remote indicator output
• Unauthorised head removal signal facility
• Locking mechanism to prevent unauthorised removal
• Supplied with protective dust cover

Technical specifications

• Operating voltage: 12 to 32 V DC (18 to 32 V DC with STB-4SE-24VR base)
• Standby current: 40 µA average at 24 V DC
• Alarm current: 65 mA max.
• Remote LED indicator current: 2 mA
• Sensitivity: 3% obscuration per metre
• Operating temperature: -10°C to +55°C
• Relative humidity: up to 95% RH, non-condensing
• Material: ABS
• Dimensions: Ø104 x 33 mm (head); Ø104 x 48 mm with UB-4 base
• Weight: 118 g (head); 183 g with UB-4 base
• Compatible bases: UB-4 standard base; STB-4SE-24VR relay base
• Standard: EN 54-7

What's in the box

• ST-P-OM detector head
• Protective dust cover