1. Standard Voltage: 12VDC 2. Piezo Sound: 120dB 3. Dimension of the siren: 104*106mm ES-626 wired alarm siren horn DC12V 15W, 320mA Operational Temp: -10C~+40Calarm siren(horn) wired, ES-626 1.rated voltage (VDC):12 2.working voltage:(VDC): 6-15 3.packing size:(mm): 580*240*450alarm sirenTechnology parameter:rated voltage (VDC): 12 working voltage:(VDC): 6-15 packing size:(mm): 580*240*450 rated ...