the McCally Tools JC-5361 Test Probe is a purpose-built assembly engineered for high-precision pneumatic pressure testing

What is the maximum pressure setting for this control

barb connectors

this assembly is strictly for Natural Gas (NG) applications

and 2870 series

Resideo S688A1007 Sail Switch 321894-708 the McCally Tools JC-5361 TestThe Resideo S688A1007 Sail Switch is a critical interlocking control designed to prove airflow before activating ancillary HVAC components like electronic air cleaners or humidifiers. Featuring SPDT switching, this duct mounted airflow switch operates within a velocity range of 75 to 250 Fpm, ensuring reliable equipment activation only when the system blower is moving sufficient CFM. The unit utilizes a large 26. 2 square inch sail (5" wide) with a