The NSR NBW-1000 Bridge Navigational Watch Alarm System (BNWAS) monitors bridge watchkeeper activity and alerts the officer on watch if the system is not reset within the selected time. If there is no response, it activates staged audible alarms to call other responsible personnel.
The system includes a colour touchscreen control unit, reset units, alarm units and a junction unit. It also supports alarm testing, emergency calling and recording of operating history.

Technical Specification

Specification	Details
Make	NSR (New Sunrise Co., Ltd.)
Model	NBW-1000
Product Name	Bridge Navigational Watch Alarm System
Abbreviation	BNWAS
Equipment Type	Bridge watchkeeping safety and alarm system
Operating Modes	Automatic, Manual ON, Manual OFF
Control Unit Display	Colour LCD touchscreen; 7-inch display
Dormant Period	Selectable, 3–12 minutes
Alarm Stages	Visual alarm, 1st-stage bridge audio, 2nd-stage remote audio, 3rd-stage remote audio
Alarm Sound Level	75–85 dB(A), as listed in the brochure
Timing Accuracy	±5 seconds
Power Supply	DC 24 V and AC 100–240 V
Input Interfaces	RS-422 × 1; reset ON/OFF inputs
Output Interfaces	RS-422 × 1; alarm outputs × 10; failure output × 1
Protection Rating	IP22 for control, junction and alarm units; IP56 for reset unit
Standard Components	NBW-1000 control unit, NBW-1050J junction unit, NBW-1090RW reset unit, NBW-1010A alarm unit
Optional Component	NBW-1090P motion detector
Origin Country	China
Standards	IMO MSC.128(75); IEC 62616