sealed: yes operating power: 4.5-5.5Vdc / 50mA extremely compact, ultrathin construction no electrical noise low current consumption yet high sound pressure level tone type: single operating voltage: 4.5-5.5 VDC rated voltage: 5 VDC current consumption: 50 mA osc. frequency: 2.3 kHz±0.4 sound level: 85 dB connector type: pcb body colour: black weight: 1.6 g (EN)