Зумер BPT20A

BPT-20A ;d=24mm.CERAMIC AUDIO TRANSDUCER, ЗУМЕР;BZ-11;\nSound transducer: piezo signaller; without built-in generator;\nManufacturer: BESTAR\nType of sound transducer: piezo signaller\nSound transducer features: without built-in generator\nResonant frequency: 4kHz;\nOperating voltage: 1...25V AC;\nSound level: 75dB (d=0.1 m)\nCapacitance: 15nF\nBody dimensions: Ø22x7mm\nTerminal pitch: 10mm\nCapacitance measurement frequency: 120Hz\nResonant frequency tolerance: ±0.5kHz\nOperating temperature: -20...70°C\nGross weight: 2.602 g