SRX-MT22-XL … PPM O2 Sensor AII PSR-11-917 One size allowed us to

One size allowed us to fit a woman that was 5' 3" tall weighing 93 pounds

Lock key protects settings

Alarm test

Splash proof

TESTIMONIAL

SRX-MT22-XL … PPM O2 Sensor AII PSR-11-917 One size allowed us toREPLACEMENT SENSOR FOR . Teledyne B 2C XL AII Model PSR 12 223 SRX MT22 XL PPM O2 sensor is replacement for Teledyne B2C XL and AII PSR 12 223 PPM O2 sensor. Its extremely smooth sensing cathode surface produces excellent signal stability. Proprietary electrolyte formulation enhances sensor performance at extreme ends of recommended temperature range. Coiled shape anode eliminates the possibility of air bubble entrapment in typical crushed Pb granules