Ultrasonic Dog Repeller Through Walls at Dan Washington blog Owl Shaped Ultrasonic Animal Repellent Bird Repellent Outdoor 4x Ultrasonic Bird Animal Repeller Pest Repellent with Loudspeaker Amazon.com: Jahy2Tech Ultrasonic Animal Repellent Outdoor,Solar Animal. Ultrasonic Bird Repeller Solar Powered Safe bird repellant: No chemicals and does not harm the animals Solar Powered: You can also use 3 AA batteries as an alternative source of power Adjustable switch, motion sensor, and ultrasound speaker Size: 15 x 12 x 7cm Battery: 3x AA Rechargeable 800mAh Battery(Included) Effective range: 5,000sq. ft. Some homes are more appealing to common birds like pigeons and doves especially those that have flowery gardens and wide lawns. Moreover, poultry farms or those that house chickens, turkey, and the like also have quite a lot of stray birds in their area because stray birds pick up grains and pellets that are left behind by the caged birds. However, sometimes these birds come in large numbers and disturb your peace. This ultrasonic bird repeller is a solar powered bird repellant. It is the safest and most humane way of keeping birds off your perimeter. It does not use harsh chemicals or traps that can harm the animals. This bird repellant only uses ultrasound to repel the birds. It is safe for the environment, safe for the birds, and safe for you too! Easy to Use Installing this bird repellant is very easy. The first thing to consider is the location where you want to place this device. Take note that this device does not use batteries, nor does it need charging. It relies solely on the heat of the sun for energy. That is why you need to place it in an open or semi open space. However, if you really need to use it indoors, you can just attach 3 AA batteries as an alternative source of power. Remember that it should get at least 4 hours of sun exposure every day. This machine has a 5,000sq. ft. effective range. Sensor This bird repeller has a motion sensor. The sensor signals the apparatus that a bird is nearby so the device releases ultrasonic sounds. It also has four mounting holes for your convenience. The device comes with mounting screws already. It can be mounted in ground with the provided spike, or hang on objects such as trees, fences and walls. Specifications: Materials: ABS Infrared (PIR) Sensor Range: 110 degree Detection Distance: Up to 30 ft. depending on animal size. Coverage Area: 5,000sq. ft. Waterproof: IPX4 Power Supply: Rechargeable 3 x AA Ni MH 1. 2v 800mah battery, recharged by solar panel (solar energy) or USB power adapter (5V 500mAh). Color: Green and silver Item Size: 15 x 12 x 7cm Package included: 1x Ultrasonic Pest Repeller 1x USB Charge Cable 1x Installing Pole 1x User manual