Measuring transmitter. Take into account to observe the legal regulations of telecommunication! In Germany the posession of this device is only allowed to persons holding a permission or to dealers. Transmitting frequency app. 25 - 30 Mhz (adjustable) Operating voltage app. 9 - 24 V/DC Output power max. 6 W Modulation method AM + FM (Narrow) Board dimensions app. 50 x 50 mm