Regardless of a tank or container’s contents – be it heating oil, rainwater, lubricant, waste oil, industrial oil or AdBlue – it is always important to know its current filling level. But the standard, on-site level gauges are no longer sufficient as, more often than not, they are neither digital nor smart, and they lack features such as app-based monitoring on a mobile phone and/or office PC. The SmartBox 4 NB-IoT satisfies many requirements for a smart filling level gauge. Read more