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1. Introduction
Z821, the ZigBee compact-size multi-port CT (current transformer) type power meter, acts as a router in ZigBee
network. Z821 is the only one for independent monitoring and measurement of up to 7 single-phase AC outlets in
the world. It is fully IEEE 802.15.4 compliant and utilizes 2.4GHz ISM band. With high measurement accuracy
±0.5%~1%, Z821 has the most advanced performance and is an ideal product to know the whole power and energy
consumption such as load current, load voltage, power, or energy.
What is ZigBee?
ZigBee is a short range wireless transmission technology based on IEEE802.15.4 standard and supports multiple
network topologies such as point-to-point, point-to-multipoint, and mesh networks. It is defined for a
general-purpose, cost-effective, low-power-consumption, low-data-rate, and easy-to-install wireless solution for
industrial control, embedded sensing, medical data collection, smoke and intruder warning, building automation
and home automation, etc.
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