RS-422 means Recommended Standard 422
ANSI/EIA standard for transmitting serial data in
Electronics
Similar to RS-422
4WH - Four Watt-Hour capacity
4WJ - Four-Way Junction
4WM - Four Wave Mixing
A - form A
normally open contacts
A - Anode
A - Ampere
A-GEMTF - Advanced Generic Equipment Model Task Force
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