Gira smoke alarm device Dual/VdS

Twice as safe with measurement of both temperature and scattered light

Gira smoke alarm device Dual/VdS, pure white

The new Gira smoke alarm device Dual/VdS is equipped with two identification processes, thus achieving double the safety. It optically identifies small smoke particles before the situation gets too precarious and dangerous for people. In addition, thermal sensors measure temperature changes within the room. In this way, various types of fire such as smouldering fires or liquid fires can be registered more rapidly and securely identified.

Alarm behaviour can also be better controlled in areas with unavoidable disturbance factors such as kitchen vapours, dust and electrical interference.

Function

The Gira smoke alarm device Dual/VdS detects smoke accumulation according to the principle of scattered optical light with processor controlled signal evaluation. The smoke alarm device Dual/VdS detects the build-up of heat with the additional rate-of-rise detector. Both sensors of the Gira smoke alarm device Dual/VdS continuously measure the optical and thermal values in the special surroundings. An 'intelligent' monitoring module checks these values and thus detects possible impurities in the air of the room. Soiling of the smoke chamber is compensated for by the drift compensation of the alarm device. This avoids the triggering of false alarms, and a high level of fire sensitivity is still guaranteed.

Places of use with unavoidable accumulation of smoke

The thermal sensors make the smoke alarm device Dual/VdS an optimal application device even in areas with unavoidable accumulation of smoke, such as kitchens. In such cases the optical smoke detection can be switched off for 15 minutes if cooking produces an unusual amount of vapours. The thermal sensors still guarantee reliable fire protection in the room. The function button is pressed until the signal tone is heard (after 2 seconds) to switch off smoke detection. The button can be easily reached in the middle of the device so that it can be operated from below with a broomstick for example. After 15 minutes the Gira smoke alarm device Dual/VdS then again checks the optical values in the room in addition to the thermal conditions. In cases of danger the device triggers an alarm.

Networking

The Gira smoke alarm device Dual/VdS can be networked with up to 40 further Gira smoke alarm devices Dual/VdS. When the smoke alarm device detects the dangerous accumulation of smoke or heat, a signal is transmitted to all further smoke alarm devices and an alarm is triggered throughout the whole building.

 

Disassembly safeguard

Thanks to its disassembly safeguard the Gira smoke alarm device Dual/VdS is also highly suitable for installation in schools, commercial properties and rental properties. The disassembly safeguard can be optionally activated on the mounting plate. Thereafter only a tool is needed for opening the locking mechanism, for maintenance work for example.
 

Function test

The Gira smoke alarm device Dual/VdS can be checked manually with a function test. Here the function button is pressed for at least four seconds. The smoke alarm device operates correctly if the signal tone is heard after a short acknowledgement tone and the ring indicator is active. If the function button is pressed again (until the acknowledgement tone) the test terminates.

Gira smoke alarm device Dual/VdS, 9 V variant

The Gira smoke alarm device Dual/VdS is supplied with power via a 9 V monoblock battery. The automatic function test regularly tests the power supply and functions of the smoke alarm device. If the battery voltage drops below a defined point, the smoke alarm device signals that the battery has to be replaced for 30 days. The smoke alarm device is completely functional during this period. The integrated twilight sensor switches off the battery warning signal in darkness.

Gira smoke alarm device Dual/VdS, 230 V variant

The Gira smoke alarm device Dual/VdS can be operated via the existing 230 V mains supply.

230 V base for the Gira smoke alarm device Dual/VdS

For the battery-operated Gira smoke alarm device Dual/VdS a 230 V base is optionally available for retrofitting.

Radio module/VdS

When equipped with a radio module, the Gira smoke alarm device Dual/VdS can be integrated in the Gira radio bus system. A transmission range of 100 m (free field) can be achieved per module. If the smoke alarm device with radio module is programmed as a repeater, the range can be expanded even further. In addition it is also possible to integrate the new Gira smoke alarm device Dual/VdS with radio module into already existing installations equipped with Gira smoke alarm devices Dual/VdS with radio modules.

KNX module for smoke alarm devices Dual/VdS

The KNX module enables the Gira smoke alarm device Dual/VdS to be connected to a KNX system. Using this module, fault messages from a smoke detector can be registered and their origins can be localised to specific rooms, which enables purposeful initial countermeasures to be launched. Thus, blinds and shutters can be raised and windows can be opened automatically. In the same way, the front door can be unlocked, the light along escape routes can be switched on, and much more. The KNX module is supplied with electricity via the KNX line. As an option, power can also be provided via a 230 V line using a 230 V base.

Relay module

The device can also be optionally equipped with a relay module allowing the connection of external alarm devices, such as a horn or warning light. In addition, alarm and fault messages, e.g. on a TeleCoppler or alarm control unit, can be switched or forwarded via a push button interface to the KNX system.

Technical data

Smoke alarm device Dual/VdS, 9 V variant

Rated voltage
9 V DC
Battery failure signal
60-sec cycle, 30 days
Visual display
Red lighting ring
Acoustic alarm display
Piezo primary detector, intermittent
Volume
approx. 85 dB (A) at 3 m
Volume in test mode
approx. 73 dB (A) at 3 m
Housing dimensions
125 x 48 mm (Ø x H)
Plastic material
PC-ASA
Operating temperature
+5 °C to +50 °C
Storage temperature
-20 °C to +65 °C
Weight (without battery)
approx. 213 g
Protection type
IP 42
Networking
of up to 40 Gira smoke alarm devices Dual/VdS possible
VdS approval:
0786-CPD-20896, VdS G209202

Battery for smoke alarm device Dual/VdS

9 V alkaline block
(included in scope of supply)

Type
DURACELL PLUS / 6LR61
Service life
approx. 5 years, with radio module approx. 2 years
9 V lithium block
(alternative, not included in the scope of supply)

Type
ULTRALIFE/U9VL-J
Service life
approx. 10 years, with radio module approx. 5 years

Smoke alarm device Dual/VdS, 230 V variant

identical to the Gira smoke alarm device Dual/VdS 9 V variant, except for

rated voltage
230 V DC
Visual display when
voltage applied
green LED
Housing dimensions
125 x 72 mm (Ø x H)
Weight
approx. 266 g

230 V base for the smoke alarm device Dual/VdS

for retrofitting
a 9 V Gira smoke alarm device Dual/VdS for the 230 V variant
enables operation via
an existing 230 V mains supply
Networking possible of up to
40 Gira smoke alarm devices Dual/VdS

Relay module

Relay contact alarm
Zero-voltage switch
Switching voltage
max. 30 V AC/DC
Switching current
max. 1 A AC/DC
Relay contact error
Zero-voltage switch
Switching voltage
max. 30 V AC/DC
Wire diameter
0.6 to 0.8 mm²
No additional current consumption in switched condition

Radio module/VdS

Power supply
via 9 V battery or 230 V screw base of the smoke alarm device
Transmission frequency
433.42 MHz, ASK
Transmission range
typ. 100 m (in free field)
Temperature range
+5 °C to +55 °C
Protection class
IP 20
VdS approval
0786-CPD-20896, VdS G209202

Design

Concept
Gira, Radevormwald
Design
Gira Design Team, Radevormwald
Phoenix Design, Stuttgart
Design awards
Gira smoke alarm device Dual/VdS
  • iF Product Design Award, iF Design Hannover, 2010
  • red dot award: product design, Design Zentrum NRW, 2010
  • Plus X Award, Innovation and Design, 2010

Smoke detector

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