CAMBRIDGE, England, November 17, 2010 /PRNewswire/ -- PassivSystems has teamed with Ember to develop a ZigBee-based home energy management system that can help homeowners cut their energy use by up to 25 percent.

England-based PassivSystems has integrated Ember's ZigBee chips and ZigBee PRO networking protocol software into its PassivEnergy home energy management product, giving users unprecedented control over their household's heating and hot water.

PassivEnergy differentiates itself from competitive products by its ability to manage homeowners' energy usage based on the way they live. Once it learns a homeowner's living environment preferences, the system regulates automatically, turning up and down the heat and hot water based on occupancy. It also integrates with other alternative energy sources, such as solar panels, so that a homeowner can manage and monitor energy generated from renewables as well as from their regular supplier. The system is controlled using the PassivController, a wall-mounted or free-standing touch screen that provides easy wireless management of heating and hot water, as well as insight into how other energy sources are performing.

An Ember-enabled PassivHub provides the central intelligence for the system and coordinates wireless communication with all of the sensors, switches, actuators and displays in the home, as well as providing an Internet broadband gateway for remote communications away from the home.

"Ember packs the highest performance and unmatched flexibility in their ZigBee networking systems, allowing us to embed very sophisticated intelligence into the PassivEnergy product family," said Fraser Harding, development director, PassivSystems. "Ember's unique platform based approach combined with industry leading ZigBee software also provides features critical for energy management applications, such as over-the-air updates, so our products will always be standard compliant and can evolve to support advanced functionality."

PassivSystems chose Ember's EM200 Series chips - EM250 system-on-chip (SoC) and EM260 network co-processor (NCP) - with the EmberZNet PRO ZigBee software stack to enable low-power, wireless connectivity in its products running the ZigBee Home Automation Profile. "A strong ecosystem of interoperating devices is very important for us at PassivSystems," Harding added. "We interoperate with products from a number of different ZigBee device vendors and working with Ember helped us ensure that interoperability."

Ember's ZigBee networking systems - chips, ZigBee protocol software and tools - simplify the complexity of integrating embedded software, networking and RF for developing low-power, wireless products in connected home, smart energy, and other remote monitoring and control applications.

"PassivSystems realizes it's not enough for energy management products to simply provide information on home energy usage; they have to help the homeowner intelligently manage it," said Bert Lutje Berenbroek, Ember's vice president of sales for EMEA. "While the PassivEnergy product family packs a lot of intelligence, the company took full advantage of Ember's support of ZigBee's Home Automation Profile and mesh networking capabilities to make the system simple to install and use."

About PassivSystems

PassivSystems Ltd ( was established in 2008 and aims to be the leading provider of Home Energy Management Systems. Bringing together specialists from two normally separate sectors, energy and telecoms, the PassivEnergy Home Energy Management System has been designed to help people reduce wasted energy, increase comfort and save money. The system has been designed to be simple to install and easy to use. PassivSystems has been highly commended and rewarded by industry and media alike in 2010. For a list of these awards visit: and click on Industry Awards.

About Ember

Ember Corporation ( develops wireless mesh networking technology - chips, software and tools - for Smart Energy, connected homes, and many other monitoring and control applications enabling greener living and work environments. The Boston-based company is a promoter of the ZigBee Alliance with an IC design center in Cambridge, England, an office in Hong Kong and sales channels and distributors worldwide.

Ember, Ember Enabled, EmberZNet, InSight and the Ember logo are trademarks of Ember Corporation. ZigBee is a trademark of the ZigBee Alliance. All other trademarks mentioned herein are the property of their respective companies.

SOURCE: Ember Corporation

CONTACT: Ravi Sharma, Ember Corporation, +1-617-951-1236,; or Michelle Dillon, Beaupre, +1-603-559-5835,