WPVT-FN/WPVT-SN Series are flush- and surface-mounting, weather-resistant, electro-acoustic signaling devices respectively. They are ruggedly constructed to withstand moisture, corrosion, dust, vibration, and temperature extremes from -30° to 150° F.Stations include high-intelligibility, environment-resistant compression driver, choice of semi-recessed enclosure or flush face plate, a variety of mounting accessories, and a weather-resistant call button for protected call-in signaling capability. Stations are available in 15 or 2 watt versions with optional 25 volt transformer.