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Dual alert placement: One mains unit stays in a wall socket indoors while the second battery-powered unit moves freely out to the garden or home office Wide signal reach: The 433 MHz radio frequency covers up to 175 m unobstructed distance between the push button and receivers Flashing light indicator: A multi-colour LED illuminates upon ringing, providing a clear visual cue in noisy rooms or for hard of hearing users Customisable audio: Choose from 8 melodies directly at the push button, adjust sound across 4 volume levels up to 85 dB, or activate mute Weather-resistant exterior: IP44 rating shields against splashing water, featuring an illuminated LED press confirmation and supplied mounting materials