Binghamton, NY Nov 10, 2009 #seven I'm not familiar with meter operation, but I would suspect that it needs to ship the switching voltages (13v for odd and 18v for even). And, if you should see the opposite sats it needs to deliver the 22khz tone. Ought to All those https://groups.google.com/g/dienphucthinh/c/niS6T4RLRkQ