INTERNAL AMPLIFIER BROADBAND POWER Power: 220-230 V ~ - 50 Hz. Insulation class: II. Operating temperature: -10°C to +55°C. For all TV bands (47 to 862 MHz). ROS ≤ 2. 1 entry - 1 exit. . . Due to recent problems with mailing to the UK. All UK buyers should contact us before buying. Thank you . We are sorry for this problem not coming from us.