Patlite ehs-m2te smart alert horn, 32 pre-programmed, off white, ac100v to ac240v patlite’s new smart alert horn is a fully-loaded melody/alarm player for industrial and commercial applications. Its adjustable high volume output, strong vibration resistance, sound reduction, and other features make it suitable for a variety of applications from public spaces to noisy, chaotic factories. features: vibration resistant to withstand up to 4.5g force despite the small size, it can deliver a maximum of 110db (at 1m) available with cable connection or terminal connection various playback modes and commands make it suitable for a wide variety of applications can be used with either pnp or npn transistor driven inputs it complies with europe’s environment-friendly rohs directive protection rating of ip65 (refer to manual for more details) the use of the sd card can allow changing messages while out in the field conforms to ul and ce requirements