Pelase refer to: http://dx.com/p/2-digit-led-satellite-finder-black-127386 Brand SATCOM Model WS8903 Quantity 1 Color Black + silver Material ABS housing Features Frequency range: 950~2150 MHz; Supply voltage:13~18V DC; Input level range: -40dBm~10dBm(SATLINK WS6903); Operating temperature:0~+40'C; Impedance: 75ohm Application For the systems without automatic satellite tuning capability; Connect to your LNBF and receiver to the satellite finder to track the clearest setting for the satellite you wish to tune to; Meter with LED display helps you know the strength of the signal clearly(SATLINK WS6903); Meter with audio tone helps you align satellite antenna to signal. Audio signal gets louder at the best setting; Works with multiple dish systems; Close or open the audio tone; With four steps gain for the satellite signalyou can increase or decrease the gain of the meter Packing List 1 x Satellite finder