Features 1.The alarm produces sound through motor driving the wind screw type siren,so it sounds a electric drill. 2.High temperature resistance, low temperature resistance 3.Easy to install: fixed base installation, you can adjust Tuyere up and down 4.Adopted of high quality material, with stable working performance 5.Scope of application: factory, construction, road fault device Specification Features: The alarm produces sound through motor driving the wind screw type siren,so it sounds a electric drill. High temperature resistance, low temperature resistance Easy to install: fixed base installation, you can adjust Tuyere up and down Adopted of high quality material, with stable working performance Scope of application: factory, construction, road fault device Specification: Model number: MS - 190 Working voltage: 220V Type of light source: continuous sound Color: red Installation: fix the bottom screw Electricity flow: 50mA Voice size: 120dB Power: 25 w Weight: Approx.400g/14.1oz Package list: 1 x Motor alarm Package List