System 3000 extension insert 3-wire - Extension operation of inserts with extension input from the System 3000. - Operation with suitable operating top from the System 3000. - Operation with neutral conductor connection. Combination with RF operating top 1-way / 2-way for KNX: - Sensor channel 1-way / 2-way. - Radio control of other devices for KNX as a sensor possible. - Temperature detection. - The 3-wire extension acts as a power supply for the RF operating top 1-way / 2-way for KNX. Can function as a mains-powered transmitter in conjunction with KNX RF operating tops and eNet operating tops.