![Lennox 69M40 Limit Switch, Automatic Reset specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-69m40-specs.png?v=1794091469&width=1445)
This Lennox 69M40 is an automatic-reset limit switch, designation L170-40F, used to monitor furnace temperature and shut down the burner if it runs too hot, resetting on its own once temperatures return to a safe range. It is a genuine Lennox replacement part. Confirm the part number against your equipment's parts list before ordering.
Specifications
| Part Number | 69M40 |
|---|---|
| Brand | Lennox |
| Type | Limit Switch |
| Reset Type | Automatic Reset |
| Designation | L170-40F |