* Sonic Cat Repeller detects and repels cats, without harming them. Protects lawns, flowerbeds, bird feeders & ponds. The Repeller is easy to install, with its battery power.
* The Sonic Cat Repeller incorporates a sophisticated PIR (Passive Infra Red) detection system, which constantly monitors a fan shaped area of a 98 degrees arc up to a distance of 12 metres.
* The protected area is over 120sq. meters of unobstructed space. The Sonic Cat Repeller detects animals moving into this area and triggers a burst of continuously variable ultrasound, which sweeps a frequency range of 18,000Hz  24,000 Hz to repel them. Simultaneously the LED indicator on the front of unit signals that it is now activated.
* The Sonic Cat Repeller is powered by two 9V alkaline batteries. Battery power in conserved by the PIR detection system, which allows the unit to remain on stand-by between activation periods, so maximizing battery life.
* The Push on/off Test Button on the face of the unit will drop the sonic frequency to an audible range. This enables you to check that the unit is functioning properly and to hear the swept frequency. The unit is also weather resistant.