APM IoT Gateway Trumeter APM IoT Gateway enables the remote monitoring of up to four APMs from the cloud via Ethernet or 4G connection. This gateway is designed for easy integration and allows users to remotely monitor the readings and status of various systems and receive alarm alerts via email and SMS. Due to the ability to interface with up to 4 meters, this gateway is plug-and-play out of the box and includes free access to the Trumeter Cloud online dashboard. Trumeter APM IoT Gateway offers a 9V to 36V voltage range, 30mA or 60mA rated current, and 100VAC to 240VAC power supply.