Chemtrol Active Chlorine PPM Sensor - 0-200 ppm - No Wire block-type_Standard Racing They have a removable drain

They have a removable drain for winterizing and a pressure relief valve set at 50 psi

It is a non-yellowing

It includes a Santoprene duckbill and 3/8 inch ferrule

The test strips are dip-n-read which produce instant results

strong patch all by itself

Chemtrol Active Chlorine PPM Sensor - 0-200 ppm - No Wire block-type_Standard Racing They have a removable drainThis is a Chemtrol Active Chlorine PPM Sensor, no wire, with 0 200 ppm readings. The Active Chlorine Menu is used to calibrate the Active Chlorine sensor. The new Chemtrol PPM solid state sensors feature superior precision and control of chlorine levels, with industry leading reliability and low maintenance requirements. These probes are so precise and reliable that they are covered by a 2 year warranty. The PPM sensors can be used alone or in