It is not intended for steam boiler protection

which prevents the furnace from initiating the ignition sequence

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

Does this blade come with the set screw

Mitsubishi Electric M21ECW397 Cable Set Els PW 17895 It is not intended forThe 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