These instructions are for the SenTRI Sensor product range. A
SenTRI Sensor product integrates smoke and heat detection
with electronic sounder and LED flasher (Strobe) in one
assembly.
Product range
All LPCB approved Sensor STATES are
listed in the
Description and
commissioning
information
These products are not visual alarm devices and do not
meet EN 54-23.
Part number
Description
Symbol
SEN-720
Heat Sensor
H
SEN-780
Heat Sensor plus
Sounder
HS
SEN-780-ST
Heat Sensor plus
Sounder & Strobe
HSSt
SEN-715 #
Optical Sensor
O
SEN-710
Optical & Heat Sensor
OH
SEN-770
Optical & Heat Sensor
plus Sounder
OHS
SEN-770-ST
Optical & Heat Sensor
plus Sounder & Strobe
OHSSt
# This 'Optical' Sensor is also used in the Duct sensor.
Associated products
S4-700
(previously SEN-700)
Base
SEN-FLUSH
Semi-Flush fixing kit
805589
Sensor dust cover
(pack of 50)
805580
Removal tool kit
SEN-COVER-REMOVER Dust cover remover tool
(spare adaptor)
805576
Label plate (pack of 50)
General specification
Operating voltage
35V - 41V
Weight
110g
with base - 170g
SEN-720 only: 88g
(with base - 148g)
Dimensions in mm
117 diameter by
49.6 height
With base the height
increases to 63.8
IP rating
IP30
IP20 when mounted on
a metal back box
Enclosure
ABS
Colour
RAL 9010
Approval
LPCB approved
Storage temperature
-20
°
C to +70
°
C
Ambient operating
temperature
-10
°
C to +50
°
C
Relative humidity
95% non condensing
(+5°C to +45°C)
Heat (H)
Standard
EN54 : Part 5 :2002
Optical (O)
Standard
EN54 : Part 7 : 2002
Sounder (S)
Standard
EN54 : Part 3 : 2002
Multi sensor
Standard
CEA 4021 : 2003-07
EN54-18 : 2005 - Input/ output devices
EN54-17 : 2005
Short-circuit
isolator
(section 4.8)
data:
V
max
42V
I
C max
0.4A
V
nom
40V
I
S max
1A
V
min
24V
I
L max
20
m
A
V
SO max
16V
Z
C max
0.16
W
V
SO min
8V
Information on minimum sound output levels to include polar
dispersion is covered in a technical note TECH7018.033,
available on request from manufacturer.
4188-897 issue 3_12/13_SenTRI Sensor Data_PART-1
1
Data and installation
Sensor, Sounder & Strobe
range