Features: Compatible with DirecTV, Dish Network, and Free-to-Air satellite Systems. Audio tone plus analog signal strength meter display. Illuminated meter display for night using. Light weight and pocket size. Allows you to setup or maximize your satellite signal reception at the dish by yourself without others' assist or having to make multiple trips to your roof. Ease of use. Handy tool to align any satellite dish in minutes. Extremely sensitive meter that indicates very small - changes in signal strength. Specifications: Input Frequency: 950 MHz - 2150 MHz Sensitivity: 7dB Power: 13-18V Package size: 13 * 9 * 6cm / 5.1" * 3.6" * 2.4" Weight: 124g/4.4oz