
WIRELESS FLOOD
DETECTOR
«STZ-RK»ver. 1
1 Product Overview
1.1 Wireless flood detector «STZ-RK» ver. 1 (hereinafter, the
Detector) is intended for detecting leaks of water from water-supply
pipelines or heating facilities and generating an alarm message
via a two-way communication by the «Rielta-Contact-R» protocol.
The Detector is intended to operate as a component of any control
panel (hereinafter, CP) supporting the wireless exchange protocol
«Rielta-Contact-R».
1.2 Water leaks control is ensured by measurement of an external
resistance between sensor terminals of the Detector.
1.3 Radio signals are exchanged within the 433.05 to 434.79 MHz
frequency range. The transmitter output power does not exceed
10 mW.
1.4 Two operating frequencies: main and reserve are used for the
wireless data exchange. The Detector switches over reserve operating
frequency automatically.
1.5 Radio exchange sessions are initiated by the Detector at a
preset frequency. The frequency settings are
10, 15, 30 sec,
1, 5,
10 min, chosen in the process of the binding procedure. The Detector
transmits alarm messages to the CP immediately.
1.6 The Detector power supply is provided by power supply batteries
placed inside it’s case: the main one and the backup one (CR2450).
1.7 The Detector state is displayed by two-color LED indicator.
1.8 The Detector generates and transmits the following messages
via a two-way communication:
- «Norm» – if the external resistance between sensor terminals value
is 200 kΩor more;
- «Alarm» – if the external resistance between sensor terminals
value is 100 kΩor less;
- «Tamper» – in the event of case tampering or the Detector removal
from the mounting surface;
- «Main Power Supply Low Battery» – under the main power supply
battery voltage drop below 2.2-0.2 V;
- «Backup Power Supply Low Battery» – under the backup power
supply battery voltage drop below 2.2-0.2 V.
1.9 The Detector is designed to operate continuously, around the
clock.
2 Features
Table 1
Parameter Value
Operating temperature, °C
minus 20 … +55
Permissible relative humidity at +25 °С without
moisture condensation up to, % 98
IP rating IP65
Dimensions, maximum, mm 65 x 55 x 20
Weight, maximum, kg 0.05
Average service life, not less, years 8
Operation time upon normal climate conditions* and
preset wireless signal exchange rate 30 sec and
more, months:
- from the main battery, not less:
- from the reserve battery, not less:
60
2
3 Scope of Delivery
Each Detector unit package contains the items listed in Table 2.
Table 2
Name
QNT.
Wireless flood detector «STZ-RK» ver. 1
Screw 3-3х30.016
CR2450 lithium power supply battery
Wireless flood detector «STZ-RK» ver. 1. Installation Guide
1 pc.
1 pc.
2 pcs.
1 copy
4 The Detector Design
In order to open the cover of the detector insert a screwdriver
tip into the notch and then press it down to move the latch (See
Figure 1).
Installation Guide
Figure 2 – The Detector Design
5 Indication
The Detector has the following indication modes:
- «Binding» procedure LED indication (procedure of logging in the CP);
- «Identification»indication mode –lights up by the relevant command
from CP and remains active during 15 min or until the case is opened;
- LED indication of the Detector state is activated after the Detector
cover is closed and remains active during 15 min under conditions:
- other LED indication types absence;
- alarm «Tamper» message is not generated during this time;
- absence of command from the CP disabling the Detector state
indication.
LED indicator modes are listed in the Table 3.
Table 3
The Detector State LED Indication Note
Binding procedure
finished
LED lighting red for
2 – 3 sec
«
Binding
»
mode LED blinking green The Detector logging in
the CP
«
Identification
»
Alternate LED red and
green alternate blinking
on command from the
CP
«
Alarm
»
Single-shot LED lights up
red for 4 sec
State indication is on
and
«
Identification
»
indication is off
Radio communication
quality appraising See sect.
«
Radio communication quality appraising
»
«Normal»
Indication is off
6 Binding with the CP
«Binding»mode is used for logging the Detector in the CP and service
information exchange.
6.1 Prepare the CP in accordance with CP reference guide.
6.2 Initially install the backup power supply battery to the holder
plate (4) on the PCB, thereupon install the main power supply battery
to the holder plate (2) (or remove the insulator if the battery is already
installed).
6.3 Periodical LED indicator blinking green is evidence of binding
process.
6.4 In case of mentioned above LED indication absence, short-circuit
«RESET» terminals for 2 – 3 sec.
6.5 The time limit for the binding process of the Detector is 70 sec.
To restart the binding procedure, short-circuit «RESET» terminals for
2 – 3 sec.
7 Communication Quality Appraising
7.1 To apprise the radio communication quality it is necessary to
act as follows:
- place initially backup and then main power supply batteries to the
correspondent holder plates;
а) Base b) PCB installed on the cover
1
7
2
3
4
6
5
5
RESET
MAIN
BACKUP
The Detector comprises the base with the openable mounting
hole (7) and the holes for the sensory terminals (8) printed circuit
board (1) (PCB) installed on the cover. The PCB comprises the
following elements: main power supply battery holder plate (2),
«RESET» contacts (3), backup power supply battery holder plate (4),
sensor terminals (5), tamper contacts (6).
Figure 1