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SKU: BU-SAA
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Description
A self-adjusting back-up alarm detects ambient noise levels using a built-in sensor and automatically adjusts its volume. It increases the sound in noisy environments to remain audible and lowers it in quieter areas to reduce noise pollution, ensuring effective and considerate operation.

Model Loudness Voltage Mount Connection Dimensions SAE Cert.
BU7797 77-97dB 12-24 VDC Universal Stud 4.02" W x 2.74" H x 1.65" D F
BU77102 77-102dB 12-24 VDC Universal Stud 4.02" W x 2.74" H x 1.65" D F
BU82107 82-107dB 12-48 VDC Universal Stud 5.20" W x 3.20" H x 2.88" D F
BU87112 87-112dB 12-24 VDC Universal Stud 5.20" W x 3.20" H x 2.88" D F
BU7797L 77-97dB 12-24 VDC Universal Wire 4.02" W x 2.74" H x 1.65" D F
BU77102L 77-102dB 12-24 VDC Universal Wire 4.02" W x 2.74" H x 1.65" D F
BU82107L 82-107dB 12-48 VDC Universal Wire 5.20" W x 3.20" H x 2.88" D F
BU87112L 87-112dB 12-24 VDC Universal Wire 5.20" W x 3.20" H x 2.88" D F

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Shipping & Returns

Expedited orders must be placed by 12 p.m. CST. Items under 110 lbs ship via standard parcel (UPS Ground). Items 110–150 lbs may ship via ground or truck freight depending on size and destination.
Larger or heavier items ship via truck freight, which may require additional delivery time.

Please inspect all shipments within 10 days of delivery. Return requests must be submitted within 45 days.

For full details, view our Shipping & Returns Policy.

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Product Information
Item # MFG # Connection Decibel
BU7797L BU7797L Wire 77-97dB
BU87112 BU87112 Stud 87-112dB
BU77102 BU77102 Stud 77-102dB
BU82107L BU82107L Wire 82-107dB
BU7797 BU7797 Stud 77-97dB
BU87112L BU87112L Wire 87-112dB
BU77102L BU77102L Wire 77-102dB
BU82107 BU82107 Stud 82-107dB