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Save big on the Mars 39042 240 Limit Switch MR240 Manual Reset 3/4" here at PlumbersStock. Limit switches are sensors that detect when a furnace has exceeded operational temperature limits and shut the appliance down as a safety measure. The way it works is that if your temperature gets to a concerning level, the limit switch will automatically open the circuit so it shuts off. The circuit will remain open/off until it is manually reset. Mars is known for engineering innovation and practical solutions.
| Manufacturer: | Mars |
| Mpn # | 39042 |
| Weight | 0.10 lbs. |
