Overview Reviews Product Description Smart Sensor, Combination, Main: CO 0-250 ppm, Remote: H2, 0-100% LEL, 3 SPDT Relays, NEMA 4X, Modbus RTU Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × ACI ACI Q6-CO/H2-100L-0-X Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments