Decrease quantity for MSR PolyGard MC2-D-S2080-05-A-0-P Solid-state semi-conductor leak detection Sensor (4-20 mA / 2-10 VDC) for Freon / Refrigerant (R410A) 0-2000 PPM, 24VDC, 3 wire, economy version. Quantity Increase quantity for MSR PolyGard MC2-D-S2080-05-A-0-P Solid-state semi-conductor leak detection Sensor (4-20 mA / 2-10 VDC) for Freon / Refrigerant (R410A) 0-2000 PPM, 24VDC, 3 wire, economy version. Add to cart