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Elite Fire Trading Company, the authorized distributor of Potter products in Saudi Arabia, presents the Potter PS40 Series Low/High Supervisory Pressure Switch . This pressure actuated switch is engineered to detect both pressure increases and decreases in automatic fire sprinkler systems , ensuring optimal system performance and compliance with safety standards. The PS40 Series is ideal for use in dry pipe systems , pre-action air/nitrogen supervision , pressure tanks , air supplies , and water supplies . The PS40 switch is factory set for a nominal system pressure of 40 PSI (2.8 BAR). It com