The FCM2630-K1A is Figaro’s compact, factory-calibrated gas sensor module for reliable detection of R454B refrigerant leaks in air-conditioning and refrigeration systems. Its proprietary semiconductor sensing technology provides high sensitivity to R454B, while a built-in filter reduces the influence of alcohol and other interfering gases for improved selectivity.

Designed to simplify OEM development, the module incorporates temperature compensation and eliminates the need for individual sensor calibration. Its declared alarm setpoint is 4.2% LFL (4,830 ppm) of R454B, with a 60-second warm-up time. Dual sensing elements support a 15-year design life, while the IP55-rated construction, wide - 40 to 95 °C operating range and RS485 digital interface support integra ...