Gas Sensor, Ammonia 0-1% (0-10,000 ppm), 4/20 mA output, ammonia selectiveQuantity*Get QuoteProduct DescriptionGas Sensor, Ammonia 0-1% (0-10,000 ppm), 4/20 mA output, ammonia selective catalytic bead sensor, stainless Steel Enclosure, suitable for electrical shunt-trip and E-stop applications