• 2 or 4 wire models

• Dual LEDs for 360° visibility

• Advanced detection and discrimination algorithms

• Easy installation and maintenance

• Sleek low-profile housing design • Durable sensor, no need for replacement

• SMD circuit board design-satisfactory quality and reliability guaranteed

• Integrated heat detector for NB326-H-2 and NB326-H-4 models

 • Five-year limited warranty

• N/C - N/O selectable relay output

• AR (Auto Reset) function for security systems (optional for 4 wire models)

• Sensor base option: standard and Shottky Diode P

•Detectors are produced of ABS plastic and all the components inside are protected against dust and humidity with a special surface mounting technology.