SEKO SPH-1 SENSOR CHLORIDE ION OUTPUT: 4-20 MA OPERATING VOLTAGE: 12VDC SENSOR NITRATES ION OUTPUT: 4-20 MA OPERATING VOLTAGE: 12VDC SG200C, Glass SOLUTION 467?S, TDS30 SX – 12 V - 50 HP SX 203 SX690641448A (SX41415) SX690641448A SX 46020 SX-020-MER-020 SX12V-025-A-350 SX12V-025-HP +/12.5MM 350 BAR SX-12V-025-HP-12, 5; SX12V-025-HP-350 SX12V-025-HP-350