Integrated Water Seal: Prevents harmful combustion gases and odors from back-feeding into the structure through the drainage piping

Manual Reset Safety: Prevents automatic cycling of a failing system

the 0009865 is the upgraded lead free version of the 0821405

Simplified Installation: Features a standard 11/32-32 connector for quick integration with modern and legacy thermoelectric valves

There is no technical difference in fitment or function

MAMAC Systems TE-703-C-5-A-2 Sensor Integrated Water Seal: Prevents harmfulThe MAMAC Systems TE 703 C 5 A 2 is a professional grade immersion temperature sensor specifically engineered for high accuracy monitoring in chilled water, hot water, and low pressure steam loops. This model features a high precision 1,000 Ohm Balco RTD sensor, delivering a positive temperature coefficient that ensures stable and repeatable resistance outputs across a wide operating range of 40F to 210F. The 4 inch 304 stainless steel probe is