The Testifire 1000 Smoke and Heat Detector Tester is a high-quality unit designed and manufactured in the United Kingdom. This product comes with 2 batteries and alarms, ensuring that your smoke and heat detectors are in top working condition. With the Testifire brand reputation for reliability and excellence, you can trust that this detector tester will effectively evaluate your fire safety system's performance and alert you to any potential issues. Ideal for both residential and commercial settings, this product is a must-have for maintaining a safe and secure environment.