Radiocrafts has developed a new module complying with the KNX-RF Multi specification, an open international standard for home and building control, used in smart home, building automation and building management systems.
KNX-RF Multi is an extension of the European norm for building automation, adding redundancy and increased reliability. The main features of the new Multi standard include frequency agility by using up to five frequencies, fast link acknowledgement of up to 64 receivers with automatic retransmission, and multihop repeaters extending the range by two hops. Battery operated transmitters and receivers are also supported by the new standard. The embedded protocol is backward compatible with KNX-RF 1.1 and KNX Ready, and can be used for unidirectional and bidirectional devices.
The RC1180-KNX2 is designed for sensors, actuators and other home and building automation equipment. It has a small size, easy to use interface, complete embedded protocol stack and low power consumption. Inter-operation between Wireless M-Bus and KNX-RF is also possible using the module.
The module operates in the 868 MHz band, using Listen Before Talk (LBT) and frequency agility to reduce collisions. Up to five frequencies are scanned and automatically selected. One receiver can be linked with up to 64 transmitters, enabling very large RF networks. The fast acknowledge and retransmission feature ensures link reliability. Complete repeater functionality is also built in the protocol stack, and can retransmit messages in two hops. It can be used with S, A and E modes of installation. Among other features, the module offers automatic battery supervision and signal strength information.
The new RC1180-KNX2 is a surface-mounted module measuring only 12,7 x 25,4 x 3,3 mm. A UART interface is used for serial communication and configuration. An antenna is connected directly to the RF pin. The module is certified for operation under the European radio regulations for licence-free use. When used with quarter-wave antennas, a line-of-sight range of 800 metres can be achieved.
For more information contact Gyula Wendler, Arrow Altech Distribution, +27 (0)11 923 9600, [email protected], www.arrow.altech.co.za
| Tel: | +27 11 923 9600 |
| Email: | [email protected] |
| www: | www.altronarrow.com |
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