Tecnoalarm has been leading research and development in the field of wireless data transmission with extraordinary success over years. Thanks to continuous innovation and the consequent introduction of up-to-date wireless components, the Tecnoalarm wireless expansions provide an exceptional level of performance and reliability, unmatched in the international security market. Dual band technology guarantees improved information, especially for the supervision, which is an essential requirement for compliance with European standards. Special noise filters allow greater control of the level of disturbance and the MONITOR RF function, implemented in the Tecnoalarm software, displays radio frequency reception and measures the level of disturbance.