This STV600 is a digital, ultra-sonic cat repellent that helps to stop cats fouling on your well-loved lawn and garden. The STV600 has a 50% bigger coverage area than other models and is ideal for medium to large gardens (2 x or more may be needed for large to extra large areas). This digital cat repeller has a built in PIR sensor to maximise area coverage and also helps to prolong battery life. The STV600 has a test button, an LED as standard for output checks and has been tested to ensure it is welfare-friendly and does not harm cats, dogs or wildlife.