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1 General Information

1.1 Wireless light alarm annunciator «Trubach-T-RK» (hereinafter, the 

annunciator) is designed to provide evacuation management in case 
of fire break-out or other extreme event.

1.2  Variants of caption:
-
-
-
-
1.3 The annunciator is intended for operation as a component of a 

system, that is operated by a control panel (hereinafter, CP), supporting 
«Rielta-Contact-R» wireless two-way data exchange protocol.

1.4 Two frequencies in the 433.05 to 434.79 frequency range are 

used for wireless signal exchange with the CP: the main frequency and 
the reserve one. The annunciator switches to the reserve operating 
frequency automatically in case of radio-frequency interference on 
the main one.

1.5 Transmitter power does not exceed 10 mW. 
1.6 The annunciator is powered in two ways:
a) by two CR123A/3V batteries, the main and the backup one;
b) by external uninterrupted power supply.
1.7  The annunciator generates and transmits the following messages 

via radio channel:

- «NORM»;
- «Tamper» – after TEST button pressing;
-  «Main power supply low-battery» – in case of the main battery 

power supply discharge lower than 2.5

-0.3

 V or external power supply 

drop lower than 9

-2

 V;

- «Backup power supply low-battery» – in case of the backup battery 

power supply discharge lower than 2.5

-0.3

 V;

- «Announcing» – if annunciator is switched on.
1.8 The following rates of radio exchange sessions of the annunciator 

status message transmission is assigned by a command from the control 
panel (hereinafter, the CP): 10, 15, 30 sec, 1, 5 or 10 min.

1.9 «Announcing» mode switching ON/OFF as well as annunciator 

operation mode adjustment are fulfilled by relevant commands from 
the CP.

1.10 The annunciator provides operation in continuous or pulsed 

light-alarm modes.

1.11 Pulse-mode parameters can be set by the user in the process 

of the annunciator adjustment.

1.12 The annunciator operation mode is displayed by two LED 

indicators – red and green (see Table 3).

1.13 The annunciator ensures safe operation in standby mode*:
- in case of main battery power supply – not less than 6 years or 10 

hours in continuous announcing mode;

- in case of backup power supply – not less than 2 months.
1.14 The annunciator is designed for continuous operation around 

the clock in closed premises.

1.15 The annunciator is resistant to electromagnetic interferences, 

electrostatic discharge and nanosecond pulse interferences.

2 Specifications 

Table 1

Parameter

Value

External power supply

(12 ± 3) V DC

Current consumption in Announcing mode under:

- C123A power supply

- external power supply

85 mА

100 mА

Average current in standby mode under:

- C123A power supply

- external power supply

10 

µ

А

8 mА

Operating temperature under:

- C123A power supply

- external power supply

from minus 20 … +55 °C

from minus 30 … +55 °C

Permissible humidity at 40 °C

93 %

Ambient class

Boreal climate**

IP rating

IP44

Dimensions, not more than

330 х 150 х 62 mm

Weight, not more than

0.45 kg

Average service life

10 years

3 Scope of Delivery

Each annunciator unit package contains items listed in Table 2.
Table 2

Name

QNT

Wireless light alarm annunciator «Trubach-T-RK»
Screw 3-3х30.016 
Wall NAT «SORMAT» 5x25
CR123A power supply battery
Wireless light alarm annunciator «Trubach-T-RK». Installation 

Guide

1 pc.

2 pcs.
2 pcs.
2 pcs.

1 copy

4 Design

Installation Guide

WIRELESS LIGHT ALARM 

ANNUNCIATOR

«Trubach-T-RK»

1 – antenna;
2 – LED indicators;
3 – correct installation marks;
4 – «TEST» button;
5 – «RESET» male pins contacts;
6 – external power supply leading-in socket;
7 – backup power supply battery;
8 – main power supply battery.

Figure 2 – PCB  

5 LED Indication

Table 3

Operation Mode

LED Indication

Binding

LED indicator blinking green

«Binding is completed»

Short-term (2 sec) LED indicator lighting red

«Identification»

Alternate LED indicator lighting green and red

«Communication Quality 

Appraisal»

See Table 4

6 Binding with the CP 

The binding procedure is intended for logging of the Detector in the 

CP and transmitting of service information to it.

6.1 Prepare the CP for the Detector binding in accordance to the 

CP manual.

6.2 Remove the Detector cover. For this purpose press the cover 

latches by screwdriver.

*) – provided that radio transmitting period is not less than 30 sec;
**) – background temperature 15 – 35 

о

С, relative humidity 25 – 75 %,  

air-pressure 86 – 106 kPa.  

Without cover

With cover on

1 – cover; 
2 – cover latches;
3 – mounting holes;
4 – printed circuit board (PCB);
5 – PCB holders.

Figure 1 – Annunciator case

300 mm

Front side

Opposite side

G
R

MAIN

BACKUP

RESET

-12V+

TEST

Т-Т-RK v10.1

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