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MB(II)-DO Digital Output 5A/250VAC Relay Output Modbus Rtu TCP lo Module

Marsoni M251S
Sale price$41.20
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Get it in 3 business days with 1 day shipping. Friday, May 29
MB(II)-DO Digital Output 5A/250VAC Relay Output Modbus Rtu TCP lo ModuleMB(II) DO Digital Output 5A 250VAC Relay Output Modbus RtuTCP lo Module Modbus lO module series with multi channel DI DO AI PT100 input. widely used in buildings, HVAC, fire, water, petrochemical, environmental protection and other industries, for most systems integrators and automation companies, it is a highly cost effective, reliable data acquisition module. Thismodule is designed for the whole industry, power supply, signal inputs and outputs,
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4.8 ★★★★★
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Green Beacon
Pawtucket, US
★★★★★ 5
Great product!
Style: Two Pieces
These were a perfect fit for my MB and very easy to install. Great value for the money. They should last given the way they were built.
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Reviewed in the United States on November 14, 2025
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Phong Nguyen
Whiting, US
★★★★★ 5
Work good
Style: One Piece
Fit and work perfectly.
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Reviewed in the United States on April 16, 2026
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Verified Purchase
THOMAS M. PERINA
Port Orchard, US
★★★★★ 5
WHAT A MARVELOUS AIR FILTER.
Style: Two Pieces
SO FAR THESE FILTERS ARE MARVELOUS. THESE FILTERS ARE WELL MADE ESPECIALLY FOR THE PRICE. LOOKS LIKE A SIGNIFICANT $$$$ SAVINGS. TMP.
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Reviewed in the United States on March 9, 2026
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Verified Purchase
JOHN PARK
Chelsea, US
★★★★★ 4
OEM quality
Style: One Piece
Good quality replacement. Perfect fit
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Reviewed in the United States on April 9, 2025
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Verified Purchase
Sophia
Draper, US
★★★★★ 5
Exact fit, no trimming needed
Style: One Piece
Ordered this for my Ford F-150 and it dropped right into the airbox perfectly — same dimensions as the OEM filter, same end seals, same fit. No gaps, no air bypass around the edges. Clean swap in under five minutes. Engine runs smooth and the price is unbeatable.
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Reviewed in the United States on May 11, 2026

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