Smoke alarm device Dual/VdS

The new Gira smoke alarm device Dual/Vds is equipped with two identification processes, thus achieving double the level of safety. It optically identifies small smoke particles before the situation gets too 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 more rapidly registered and securely identified. Alarm behaviour can also be better controlled in areas with unavoidable disturbance factors such as kitchen vapours, dust and electrical interference.

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 spacial 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. That avoids false alarms, whereby a high level of fire sensitivity is still guaranteed.

The thermal sensors make the smoke alarm device Dual/Vds an optimal 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 a lot of vapours for example. 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.

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.

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 machanism, for maintenance work for example.

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.

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

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

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

When equipped with a radio module, the Gira smoke alarm device Dual/Vds can be integrated into 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 broadened 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.

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/EIB system.

• Rated voltage: 9 V DC
• Battery failure signal: 60 sec. cycle, 30 days
• Optical display: red ring indicator
• Acoustic alarm display: Piezo primary detector, intermittent
• Volume: approx. 85 dB(A) at 3 m
• Volume in test operation: approx. 73 dB(A) at 3 m
• Housing dimensions: 125 x 48 mm (dia. 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 recognition: 0786-CPD-20896, VdS G209202

9 V alkaline block battery (included in scope of supply)

• Type: DURACELL PLUS / 6LR61
• Service life approx. 5 years, with radio module approx. 2 years

9 V lithium block battery (alternative, not included in scope of supply)

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

Identical with Gira smoke alarm device Dual/VdS 9 V variant, excepting:

• Rated voltage: 230 V DC
• Optical display with connected mains voltage: green LED
• Housing dimensions: 125 x 72 mm (dia. x H)
• Weight: approx. 266 g

• for retrofitting a 9 V Gira smoke alarm device Dual/Vds to a 230 V variant
• enables operation via an existing 230 V power supply
• networking of up to 40 Gira smoke alarm devices Dual/Vds possible

-Relay contact alarm: Zero-voltage switching

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

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

Konzept:
Gira, Radevormwald

Design:
Gira Designteam, Radevormwald
Phoenix Design, Stuttgart

Designauszeichnungen Gira Rauchwarnmelder Dual/VdS:
- iF Product Design Award, iF Design Hannover, 2010
- red dot award: product design, Design Zentrum NRW, 2010
- Plus X Award-Siegel, Innovation und Design, 2010