Built-in Satellite finder management. 13V18V/22K/Signal lock instruction. LNB Short-circuit alarm. 7 inch portable satellite finder CY70702Advantages:1. LNB short-circuit alarm protection system,2. 4 hours satellite searching time,10hours working time under AV condition,3. USB port for software upgrades,4. Shows signal strength and quality,shows channel picture,5. Completely programmable by the ...