| Product Line | Electrical |
| Category Name | Switches & Flashers |
| Part Type | Low Pressure Switch |
| Alternate Part Name | Low Air Pressure Switch, LP-3 Pressure Indicator, LP-3 Low Pressure Switch |
| OEM Part Number | 1MR2339R |
| Application Type | Semi-Trucks, Heavy Duty Trucks |
| Supply Port Size | 1/4-18 NPTF |
| Terminal 1 Connector | #8-32 UNC-3B |
| Terminal Configuration | Single |
| Thread Gender | Male Thread |
| Material | Die Cast, Plastic Polymer |
| Overall Length | 2.15 in. |
| Closing Pressure | 70 ± 6 psi |
| Current Rating | 10:00 AM |
| Maximum Operating Temperature | 185 Deg. F (85 Deg. C) |
| Minimum Operating Temperature | -40 Deg. F (-40 Deg. C) |
| Operating Voltage | 12 Volts |
| Net Weight | 0.16 lb. |
| Cross References | 1MR2339R, 280530N, FSW-0506, FSW0506 |
| Intended Application | - Designed for integration into the air brake system of heavy-duty commercial vehicles. Its primary function is to act as an electro-pneumatic switch that automatically activates an audible (buzzer) and/or visual (warning light) alarm on the dashboard when the air pressure drops below the minimum safe level for normal operation (nominally 60-75 PSI).
- Always compare with your OEM part number prior to purchase to confirm full compatibility.
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