Used for field and fruit forest training birds, but also suitable for energy, airports, warehouses and other training bird operating areas.Features :Users can be based on the bird repellent needs, according to the bird repellent area, adjust the game volume.Standard with two voice chips. The voice chip can be retained as needed to disrupt the birds' adaptation to sound. Easy to replace.Can be connected to the speaker, effectively expand the area of the bird, reduce the user application cost.The perfect rainproof design can make the bird killer device more convenient to use outdoors.To hunt birds by sound, environmental protection, no pollution, good security.Users can set the automatic playback sound frequency according to the bird damage situation, and choose the playback sounds (8 kinds of sounds, 32 kinds of modes) independently.Fully automatic control. Users can choose "day", "night", "all day" and other working modes according to the damage of the birds.High cost performance, the area can reach 500 square meters.Features :Solar panels : 6V 50MA battery: 800 mah AA With transformer plug, can input DC4.5V, 200 mA loads (not included) Induction range: 5000 square feet Item Size: 160 * 130 * 90mm / 6.3 * 5.1 * 3.5in 170 * 140 * 115mm / 6.7 * 5.5 * 4.5in Package weight: 365g / 12.9oz Packing List:1 * bird repellent