Honeywell L7224U-1002 Universal Electronic Oil Aquastat with EnviraCOM Communication Electronic oil Aquastat electronically monitors and controls circulator, burner, and boiler temperatures and provides electronic temperature sensing in an oil-fired hydronics heating appliance (not included) EnviraCOM communication enables device for use with the Honeywell EnviraLINK service (not included) for remote monitoring LED display provides diagnostic and status information Low limit can be disabled for cold start boiler applications UL recognized Oil aquastat controller Well mount, horizontal or vertical position, or flush mounted remote from the well Temperature range -30 F to 150 F