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• Modular radio control system for exhaust air devices • Enables various desired applications through the combination of different modules • Control signals are transmitted wirelessly within the house – there is no need for complex cabling to individual exhaust air systems (extractor hood, living space ventilation system, bathroom fan, etc.) • Existing installations can also be easily expanded • High level of safety thanks to DiBt e modules • Various radio transmitters such as window contact switches, temperature sensors and pressure monitors can be conveniently combined with various receivers such as built-in or adapter plug versions. • Radio frequency: 868 MHz• Together with the BL220F or BL220Fi exhaust air safety switch, it forms a safety system for monitoring the differential pressure between the installation room of the fireplace and the connecting piece (chimney) or the outside atmosphere during the simultaneous operation of a ventilation system such as an extractor hood, a hob extractor or a living space ventilation system with an open fireplace. Due to potentially problematic weather conditions, it is recommended to use a BL220Temp (temperature sensor) in addition. • Operating voltage: 230 V / 50 Hz • Includes silicone hose Ø 6 mm, length 2 m
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