We are looking to purchase 72 square meters of mini 4WD track system for RC car gaming applications. The track should be suitable for commercial use in indoor entertainment venues. Please provide specifications regarding track material durability and modular connection capabilities.  

Looking for wireless alert system for large transportation tracks. Spec's as below: Wireless alarm center, GSM 4G, SIM card, to support 4 - 5 wireless PIR. Programming with SMS or mobile APP. Wireless PIR motion detectors to fit. Output 12V or relay at alarm to drive siren. All alerts sent to mobile app, app allow arm and disarm the system