I have used various muting modules that integrate directly with light curtains, but can not use what I know for this application. I have a door that needs to be interlocked as product passes through it. We can not use a light curtain because of spacial requirements. Our plan is to interlock the door with an dual channel RFID type door switch. We can interface direct with a SMR or other safety relay, but that would not include Muting! Need any ideas for off the shelf muting modules that do not have to be integrated with a light curtain.