The MLS-020-TF Liquid Level Switch is float activated to operate an electrical SPDT reed switch for annunciation/pilot signal for indication of high level to an annunciator, controller or PLC. The MLS-020-TF connects directly into the gas scrubber wall and can be used with an FW Murphy weld collar or external float chamber. The MLS-020-TF's process connection is 2" NPT. The test button tests for float function; the complete mechanism including the magnetic activation of the reed switch; and the wiring from the switch to the control panel. Features of the MLS-020-TF include a clean magnet which design virtually eliminates iron filing accumulation on the magnet, seal-free construction, and a push button to test functions. The switch operates in 0.50 specific gravity or heavier fluids and is designed for harsh gas compressor scrubber applications. 304 cast equivalent stainless steel body and 304 stainless steel float.