2W-B means Two Wire, Base mounted smoke detector in
Commercial
Similar to 2W-B
ACID - Amstrad Cartridge Identification Device
ACLD - Active Constrained Layer Damping
ACM - Accumulated Call Meter
ACM - Asbestos Contaminated Material
ACM - Air Conditioning Motor
ACM - All China Made
ACMV - Air Conditioning Mechanical Ventilation
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