Operations and safety managers rely on Vaisala Thunderstorm Warning System TWX300 to minimize inconsistent and subjective decisions about lightning, to support safety goals, and to improve operational efficiency. Vaisala Thunderstorm Warning System TWX300 tracks lightning and monitors overhead lightning potential and automatically sends lightning warnings and all clears to remote alarm displays.

TWX300 Workstation
Provided by Vaisala with the Microsoft Windows XP (SP2) operating system (minimum), TWX300 software, Vaisala Lightning Data Server (VLDS), Watchdog Timer and Card, and optional Relay Card.
TWX300 Software
Includes the Main Application, Diagnostic Replay, Central Data File Viewer, EFM Data File Viewer, Alarm File Viewer, Configuration File Viewer, and TWXS1200 Central Data File Converter.
TWX300 Interfaces
Local Sensors – 0 to 7 Vaisala Electric Field Mill EFM550s Alarm Distribution – Remote Alarm Display System (RADS) via RS232/Ethernet Device Server or Modem; Email notification via Ethernet; or Relays via RS232, RS232/Ethernet Device Server, or Modem. Threat Display – Remote Alarm Display System (RADS) and TWX300 software RADS Display Window
Lightning Data Source
U.S. National Lightning Detection Network®, Canadian Lightning Detection Network, or from any lightning detection network using Vaisala Thunderstorm Central Processor CP7000 or CP8000 and preceding central processors LP (IMPACT) and CPS (SAFIR).
Electric Field Mill EFM550
Range				+/- 10,000 V/m max.
Mount Height				30 in. (76.2 cm) min.
See Vaisala Electric Field Mill EFM550 Data Sheet for more detailed specifications
Remote Alarm Display System (RADS)
Basic Display - Three colored (red, amber, green) 20 dual-LED light panels support up to five combinations of threat condition Reliability Features – Visually alerts user to outage of TWX300 processor or communications. Built-in battery backup.
Relay Kit
Relays				8 form C relays rated for 15A at 24DC and 120VAC, and 10A at 240VAC
Load Rating				5A for all three voltage ranges