LED Digital 950-2150MHz DC 13-18V for HDTV with Compass 4 LED Indicator Set the LCD screen readings in 10%-20% by adjusting the level control found in the side of the .(Turning the knob clockwise will increase the reading.) the signal by slowly moving the azimuth and elevation of your dish. If the 's reading becomes full scale adjusting the level control knob to reduce the reading to around 50%. (Turning the knob counterclockwise will decrease the reading.) continue to move the dish have the highest possible LCD reading and the highest possible buzzer pitch frequency. Do not use the directly in front of the dish. When using a LNB with gain higher than 60dB inserts a 5dB attenuator between the LNB/LNBF and the . The has optional 4LED on the front panel indicating: 22Hz, 0kHz, 18V, 13V Material: plastic colour: As shown Package Contents: 1 x Signal finder 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.