8WD4420-0EAOverview of Siemens 8WD4420 0EA Siren Element The Siemens 8WD4420 0EA is a siren element designed for industrial signaling columns, providing an alternating tone alarm with sound levels between 95 to 105 dB. It operates on 24 V AC DC, featuring a durable black housing and IP65 protection rating, making it suitable for harsh industrial environments. Key Features of Siemens 8WD4420 0EA Siren Element Sound Output: Alternating tone with a loudness of 95