N4640 - LEGRAND 3440 Technical Sheet

Passive IR detector
Description
The passive IR detector is of volumetric type and sensible to movement of warm bodies.
The volume of the protected zone is divided into 14 beams distributed on 3 levels. The
detector works in two different ways: instantaneous or with impulse calculation, in order
to reduce the possibility of false alarms.
It's available in the version with reduced sizes and is suitable for wall mounted
installation in systems preset or not preset for traditional sensors. For the sensor item
N4640 the covering range can be adjusted on three levels (3, 6, or 9 metres), while the
sensor item N4640B has a fixed sensitivity level (6 metres).
Technical data
- Power supply from SCS BUS: 27 Vdc
- Max. absorption: 4.5 mA
- Operating temperature: 5 – 40°C
Covering range
30°
105°
A
B
A
B
A
12
10
8
6
C
C
m
4
2
1,20
C
m
0 1 2 3 4
286
30°
B
A
B
A
B
A
C
molla
tamper
Surface
A
mounted
B
5 6 7 8 9 10 11
MA X MA X
Slanting
installation
MQ00038-d-EN
Front view
Legend
1 - Alarm warning LED;
2 - Fresnel lens.
Dimensional data
35
04/06/2014

N4640

N4640B
1
2
23