Specifications: Frequency Range: 950-2150MHz Input level Range: -40~-10dBm Impedance: 75Ω Gain: ≥10 dB Power Supply: 13-18V DC Operating Temperature: 0~40° size: 130 x 65 x 27mm Material: ABS colour: blue Package Contents: 1 x Digital Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 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" function, it reduces the incoming signal to a lower level. There are four step attenuation totally. Built-in amplifier compensates insertion loss. Use LCD to display the satellite signal intensity Features: In-Line IF signal strength meter,75Ω connector,Built-In light & electric buzzer. Built in Compass;Ideal for satellite installations or to re-point your satellite dish. It automatically recognizes the LNBF frequency and works with any C band, Ku band, or Ka band satellite. No need to input transponder frequency, symbol rate, or polarity. This meter is truly plug & play. -95DR has a blue back light to allow use at night. The signal meter never needs to be recalibrated nor does it need complicated programming.