Multi sensor smoke detector is becoming increasingly common. It is best achieved using Testifire 1001 Detector Testers in the UAE and Saudi Arabia (KSA). Two models are available, Testifire 1001 for testing smoke and heat and Testifire 2001 that adds the ability to test CO. As well as multi-sensors, Testifire can also be used to test single sensor detectors – making it perfect for all jobs.