the Sensus 121-12-1 1/2 is compatible with natural gas

offering the same 4-inch probe and 10k ohm Type II characteristics with updated manufacturing standards for current building codes

If you are performing a full field conversion or replacing a different brand

It does not require field programming or external modules for standard 5-tap operation

which prevents the furnace from initiating the ignition sequence

Mitsubishi Electric M21ECW397 Cable Set Els PW 17895 the Sensus 121-12-1 1/2 isThe Mitsubishi Electric M21ECW397 is a critical MN Converter Cable Set designed specifically for field technicians performing high level diagnostics on M Series and P Series systems. As the direct replacement for M21EC0397, this kit is required for interfacing with the PAC USCMS MN 1 Maintenance Tool. This comprehensive set contains five distinct conversion cables (M21EC1397, M21EC2397, M21EC3397, M21EC4397, and M21EC5397), allowing for a USB UART