The PROTOOL Mains Tester in the PT37520300 model is specifically designed for large-duty electrical testing. This mains tester, crafted with precision and safety as top priorities, ensures reliable performance when checking electrical circuits and outlets on a larger scale. Whether you're a professional electrician or a DIY enthusiast handling more substantial electrical tasks, the PT37520300 provides a convenient and efficient solution for testing electrical connections. Elevate your toolkit with this PROTOOL mains tester, offering a reliable and safe way to check the presence of electrical voltage in larger applications.