The low cost, compact, lightweight 20/20ML UV/IR Flame Detector comprises both UV and IR sensors, detecting hydrocarbon-based fuel and gas fires, hydroxyl and hydrogen fires, as well as metal and inorganic fires at distances up to 50 ft (15 m). The UV sensor incorporates a special logic circuit that helps prevent false alarms caused by solar radiation. Simultaneous detection of radiant energy in both the UV and IR sensors triggers an alarm signal. Features UV/IR Dual-Sensor High-Speed Response Large Field of View (100° horizontal/vertical) User Programmable Functions Configurable via software from a PC or handheld device Immune to False Alarms (solar blind) Automatic and Manual Built-In-Test (BIT) Standard 4-wire Connection 4-20mA source (3-4 wires) configuration RS-485 Modbus Compatible MTBF Minimum 100,000 Hours 3-Year Warranty