Remote display arrangement for heating device

摘要

The arrangement includes a signal generator (10) which output a first signal (16) to a device (14) via a line (12). The device includes a signal detector (28) and outputs a second signal (18) which is fed to the line. Preferably, the first and the second signals are fed simultaneously to the line. A third signal (20) is callipered at the line on the signal generator side and is supplied to a comparator (22) in which the third signal is compared with a predetermined threshold value (24).