The Sonoff MINI-ZB1GP is a compact Zigbee power meter from the MINI Extreme Series Gen5, designed for concealed indoor installation to monitor energy consumption. Operating on the Zigbee 3.0 protocol, this device handles loads up to 16A within a voltage range of 100-240V, allowing you to track power usage up to 3840W in real time. Its white PC housing is remarkably small, measuring just 32 x 29 x 15.9 mm and weighing only 14 g, which makes it easy to fit into tight electrical boxes using copper conductors from 0.75mm² to 2.5mm². Beyond simple monitoring, it supports bidirectional energy measurement, making it a practical choice for those managing balcony PV systems. You can store historical data for up to a year in the cloud and export these records to Excel via the eWeLink app. The device also acts as a Zigbee signal repeater to strengthen your smart home network. It integrates with gateways like the ZBBridge-P or iHost, and is compatible with Home Assistant through ZHA or Zigbee2MQTT for users who prefer local control.