AtlasIED ATMASKSC Sound Masking and Commissioning Precision Level Control

The AtlasIED ATMASKSC is a wall‑mounted precision attenuator designed specifically for use with the M1000A35 Self‑Contained Active Masking System. Featuring a ten‑position, non‑shorting rotary switch without end‑stop, it offers 1 dB attenuation steps from 0 dB to –9 dB for refined sound masking adjustments. Built to meet the rigorous needs of commissioning professionals, this plate seamlessly integrates into masking systems to ensure accurate and consistent audio level control.

Constructed with a stainless steel faceplate to match standard volume wall plates, the ATMASKSC supports 2‑ or 3‑conductor interface connections and works with other 10 kΩ VCA systems. It’s capable of effective control up to 500 feet over 22‑gauge wire, making it suitable for large installations. UL2043 listing ensures safety compliance when used with the M1000A35.

Key Features

• Designed for use with M1000A35 masking system
• 1 dB step attenuation from 0 dB to –9 dB
• Ten‑position non‑shorting rotary switch without end‑stop
• Compatible with 2 or 3 conductor 10 kΩ VCA systems
• Stainless steel wall plate matches standard volume plates
• Works through 500 ft of 22‑gauge wire
• UL2043 safety listed when used with M1000A35

Technical Specifications

• System Type: Wall‑Plate Mounted Precision Stepped Attenuator for M1000A35
• Total Attenuation: 0 dB to –9 dB (does not turn audio off)
• Impedance: 10 kΩ
• Plate Size: 1 gang
• Plate Type: Stainless Steel
• Dimensions: Height 4.5‑Inch, Width 2.75‑Inch, Depth 1.6‑Inch
• Net Weight: 0.16 lbs
• Shipping Weight: 9.48 lbs
• Safety Listed: UL2043 (when used with M1000A35)
• Warranty Period: 60 months from date of purchase