​All units feature heated sensor windows to eliminate condensation and icing, sensitivity selection, multiple regulatory approvals and flexible communication options, including 3-color LED, 0-20mA, HART® Protocols, RS-485 and MODBUS®. Robustly designed to handle tough work environments, the 40 Series Flame Detectors showcase long-life and high-reliability features​​​​​​​​​​​​​​​​​​​​