Vision Security Technologies Pte Ltd has been the pioneer company to market and installed Automatic Lightning warning system in MOE School since 2008. This ALWS has a built in 3G/4G GSM modem to activate lightning alert message (SMS) send from our server link to NEA lightning@SG website when there is lightning at your area. This lightning alert via NEA may be delay of around 5 to 10 mins due to NEA system processing. The Automatic Lightning Warning System controller has following features.