640000003 Control Module Kit S Wall Mount for AquaBalance 80 120 155 Series 1 2 Weil Mclain Product Type_With Hoses It allows for efficient and 3750 Plain Jergens tooling It allows for efficient and safe combustion exhaust ventilation providing: * Automatic low water cut off to prevent boiler damage Key Features:Wall mounted design for convenient and space saving installationSpecifically engineered for use with AquaBalance 80 120 155 Series 1 2 boilersEssential for maintaining optimal boiler operation and efficiencyBacked by Weil Mclain's reputation for quality and durability Upgrade your boiler system with the superior Weil Mclain Control Module Kit S Wall Mount for AquaBalance 80 120 155 Series 1 2 providing you with reliable and efficient heating performance