Used In: 701, 724, Lx-10, Lx-15, SweetwaterReplacement Option For: Ai # Sd6600-070 / Mfg # 6600-070 Ai # Sd6000-021 / Mfg # 6000-021 Mfg # 6600-071 Mfg # 6600-104 Specifications Category: Thermostats / Sensors / Hi Limits Subcategory: Temperature Sensors 6600-166