Feature:1. Single alarm sound high decibel active buzzer.2. 220V AC power supply, the buzzer will ring when powered on.3. Red wire is positive pole, black wire is negative pole.4. Continuously work for up to 12 hours.5. Can be used in fire disaster alarm.Specification:Item Type: Active BuzzerOperating Voltage: AC 220VDecibel: 110dBLead Length: 33cm/13.0in.w-e-text table td,.w-e-text table th,.wang-edit-text table td, .wang-edit-text table th{border: .5pt solid #000;};.w-e-text table,.wang-edit-text table{border: 1px solid #000 !important;}Package List:1 x Buzzer
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