The Murphy 1‑Pin Oil Pressure Sensor/Switch is a rugged engine oil pressure monitoring component designed for diesel and industrial engines. It provides accurate oil pressure feedback to control systems or gauges, helping protect engines from low oil pressure conditions that can cause severe damage. This single‑wire sensor is widely used in generator sets, industrial engines and heavy machinery.

Where It Is Used

Diesel generators and backup power engines
Perkins, Murphy and compatible industrial engine models
Construction, agricultural and mining equipment
Engine control panels and monitoring systems

This sensor/switch directly detects oil pressure and sends a signal to shutdown systems or warning indicators when pressure drops below safe levels.

Key Functions & Features

Single‑pin/single‑wire design for simple installation
Oil pressure monitoring: Detects engine oil pressure and triggers alarms/shutdowns to protect the engine
High reliability: Built for harsh operating environments in industrial and generator applications
Wide compatibility: Often cross‑referenced with common Murphy sensor part numbers (e.g., 05‑70‑1857 / ESP‑100)
Durable construction: Corrosion‑ and heat‑resistant materials for long service life