價格：免費
檔案大小：76 MB
版本需求：需要 iOS 9.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
We have put in 3 common versions of gas meters. How to switch them on, test different gas readings to know if its safe or not safe.
There is a trainer mode where 1 trainer can control up to 8 other student devices.
支援平台：iPhone, iPad