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. Frequency range:950-2150MHz Supply voltage:13-18V DC Input level range:-40dBm - -10dBm Operating temperature:0-40 Impedance:75ohm How to connect: connect a jumper cable from the LNB to the "Satellite" port on the digital SATFINDER. connect the cable from your satellite receiver to the "Receiver" port on the digital SATFINDER. Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:Blue Material:Plastic Size:130x65x27mm Package Contents: 1 * -95DR Satellite Signal Meter 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.