does it come with the other guard? that can be commected to hoover?

It does not come with a dust extractor guard. The dewalt guard has to be removed for installation also. Still a great adaption.

Is there a wood blade / can it be used for plywood sheets? TIA

It looks like this is not the Dewalt tool for plywood. They have some very well reviewed circular saws which are suitable for wood.

Does it work fine with an 18v battery or just 20v ones?

18 v is fine for this cut off saw, brilliant bit of kit, I also bought the Bosch multi blade for this. Works a dream

How Depth is the maximum cuts?

2,6cm.And work with 18 V battery.

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Description

⚡ Cut smarter, not harder — power meets precision in your hands!

DUST FREE ZONE - Removable dust shroud with AirLock™ connection keeps your workspace clean when paired with DEWALT extractors.
UNSTOPPABLE POWER - Brushless 550W motor powers through toughest materials with ease.
CUSTOM DEPTH CONTROL - Tool-free depth adjustment with clear mm/inch markings for perfect cuts every time.
TRIPLE CUT PRECISION - Includes bonded abrasive, multi-material, and tile diamond wheels for versatile cutting.
WORK ANYTIME ANYWHERE - Integrated LED light brightens dark workspaces for flawless accuracy.

The DEWALT 20V MAX Cut Off Tool (DCS438B) is a compact, brushless cordless power tool delivering 550 watts of cutting power. Equipped with three specialized diamond and abrasive wheels, it handles a wide range of materials effortlessly. Featuring a connected LED work light and tool-free depth adjustment, it ensures precision and visibility in any environment. The removable dust shroud with AirLock™ connection enables clean, efficient operation when used with compatible extractors. Bare tool only, lightweight at 1.36 kg, designed for professional-grade performance on the go.

Specifications

Manufacturer	DEWALT
Part Number	DCS438B
Product Dimensions	12.38 x 15.39 x 12.38 cm; 1.36 kg
Item model number	DCS438B
Size	One Size
Colour	Multi
Style	Angled
Material	Aluminium, Metal, Plastic
Power Source	Battery Powered
Voltage	20 Volts
Wattage	550 watts
Horsepower	550 Watts
Item Package Quantity	1
Special Features	Compact
Included Components	DCS438 20V MAX* XR ® Brushless Cordless 3 in. Cut-Off Tool, Removable dust shroud with adjustable shoe and AirLock™ connection, DW8711 Bonded Abrasive Wheel, DW8530 Diamond† Multi-Material Wheel, (1) DW47350 Diamond† Tile Wheel, (1) 1-7/16 in. Arbor Adapter Ring, (1) Hex Wrench
Batteries included?	No
Batteries Required?	Yes
Item Weight	1.36 kg