Buzzer Level : 85dB;Frequency : 2300Hz;Type : Normal Open TriggerFixing Hole Dia : 3mm/0.12";Fixing Hole Center Distance : 51.5 x 24.5mm/2" x 1"(L*W);Overall Size : 56.5 x 29.5 x 12mm/2.2" x 1.2" x 0.47"(L*W*H)Materials : Metal, Plastic, Electric Parts;Main Color : BlueWeight : 12g;Package Content : 1 x Alarm Delay Module Unique Bargains FC-31 DC 5V 85dB NO Trigger Buzzer Alarm Time Delay PCB Module Blue

Buzzer Level : 85dB;Frequency : 2300Hz;Type : Normal Open TriggerFixing Hole Dia : 3mm/0.12";Fixing Hole Center Distance : 51.5 x 24.5mm/2" x 1"(L*W);Overall Size : 56.5 x 29.5 x 12mm/2.2" x 1.2" x 0.47"(L*W*H)Materials : Metal, Plastic, Electric Parts;Main Color : BlueWeight : 12g;Package Content : 1 x Alarm Delay Module Unique Bargains FC-31 DC 5V 85dB NO Trigger Buzzer Alarm Time Delay PCB Module Blue