HONEYWELL 24" THERMOCOUPLE

What it is

• Brand: Resideo Technologies (formerly Honeywell Home)
• Type: Standing pilot thermocouple
• Function: Generates millivolt signal from pilot flame heat to keep gas valve open

Key specs

• Length: 24"
• Output: ~30 mV (26–32 mV open circuit)
• Temperature range: ~780°F to 1400°F hot junction
• Connection: 11/32"-32 male connector nut
• Includes: adapter + push-in clip (varies by kit)

System role

• Detects pilot flame presence
• Sends low-voltage signal to gas control valve
• If flame fails → valve shuts gas off for safety

Bottom line

• ✔ Standard universal gas thermocouple
• ✔ Widely cross-referenced OEM replacement part
• ❌ Not a plumbing item — HVAC / gas control safety component