The Mobile Perimeter System (MPS) IV (photo) is a mobile gas-monitoring platform that can be rapidly deployed for temporary or remote gas-detection applications. The solar-powered unit has an onboard strobe and siren, and can be configured with wireless communication. The MPS IV is suitable for monitoring potentially dangerous gas levels in areas where conventional wired systems are difficult or costly to install. Up to four gas readings can be monitored simultaneously and the signals are transmitted back to a primary alarm station. — Industrial Scientific – Oldham S.A.S., Arras, France