Specification: Use LCD to display the satellite signal intensity. Built-in signal alert buzzer. With LCD backlight/buzzer and attenuation control function. DC pass to LNB. ATT increasing key. If the incoming signal is too strong, (the thermometer-scales shows max and the signal strength value shows 99), it can easily be attenuated by enabling this "attenuation" funtion, it reduces the incoming signal to a lower level. There are four step attenuation totally. Type: Digital Satellite Finder Frequency Range: 950-2150MHz Supply Voltage: 13-18V DC Input Level Range: -40dBm - -10dBm Operating Temperature: 0 - 40 Impedance: 75 Size: 13cm x 6.5cm x 2.7cm/5.12" x 2.56" x 1.06" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Digital Satellite Finder 1 x User's Manual