Overview Reviews Product Description Refrigerant Sensor, R407f, 0-1000 PPM, LCD, 3 SPDT Relays, NEMA 4X Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × ACI ACI QIRF-407FX-0 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments