Automation Products Group, Inc., is a US manufacturer of liquid level sensors using ultrasonic, resistance-chain probes, magnetostrictive probes, and submersible pressure sensors. We also make pressure sensors and digital pressure gauges for industrial automation and process industry applications. Our Tank Cloud sensors provide remote level and process monitoring via ethernet enabled sensors through the internet. Our Aerospace Products include phase sequence indicators, phase sequence relays, aerospace timer modules, RPM sensing modules, warning keyer modules, and transformers.