Audible Signal Devices Offer Big Sound, Small Size

Sonalert II surface-mount audible signal devices come in several versions. AST100 delivers an sound pressure level (SPL) of 80 dB at 10 cm with a 5 Vpk-pk squarewave input and a resonant frequency of 4000, ±500 Hz. AST200 delivers an SPL of 87 dB at 10 cm with a 3 Vpk-pk squarewave input and resonant frequency of 2700, ±500 Hz. AST500 delivers an SPL of 85 dB at 10 cm with a 1.5 Vpk-pk squarewave input and a resonant frequency of 2400, ±500 Hz. AST600 delivers an SPL of 87 dB at 10 cm with a 5 Vpk-pk squarewave input and a resonant frequency of 3200, ±500 Hz. AST700 delivers an SPL of 85 dB at 10 cm with a 1.5 Vpk-pk squarewave input with resonant frequency of 3200, ±500 Hz. And AST800 delivers an SPL of 87 dB at 10 cm with a 3 Vpk-pk squarewave input and a resonant frequency of 3200, ±500 Hz. Two indicator models have built-in drive circuits: the ASI devices deliver an SPL of 85 dB at 10 cm with a 5 vdc input signal with a resonant frequency of 2300, ±300 Hz; and ASI400 delivers an SPL of 85 dB at 10 cm with a 12 vdc input signal with a resonant frequency of 2300, ±300 Hz.