Performs from any posture Stand it up, lay it back again, cling it upside down – you’ll usually get the ideal seem. PositionIQ technological know-how quickly senses the speaker’s orientation and optimises its audio to provide further oomph to any moment. EN54-23 is a eu Common for Visible alarm devices, https://www.firesense.co.uk/type/conventional-fire-system/conventional-sounders-vids-vads/