Can you run all three valves at once? Or at least the shower and hand shower at the same time?

Yes all 3 outlets can be used at once or any combination of the 3 can be used together or one at a time.

how easy is this for someone with limited hand use?

Very easy once the temp is set you only need to push the button you need.

What other items would need to be purchased to install this in a setup for a tub and a shower? Do the items come with installation instructions?

The rough-in in wall piece would be needed to have this work properly with a tub and shower set up. This additional piece would be the 35601000 Rapido Smartbox Universal Rough-in Box.

how much does the volume control change the water flow? is it 0-100% or a minor volume change?

Hello, the buttons are used for turning the water flow off and on. The volume adjustment is from EcoJoy to Full Flow. Specifically, as stated by Grohe: " SmartControl push for ON-OFF, turn for volume adjustment from EcoJoy to Full Flow " . Hope this helps! Thanks!

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🚿 Elevate your daily ritual with precision, safety, and style — because your shower deserves the smart touch.

ENDURING ELEGANCE - Premium metal construction with GROHE StarLight finish ensures a pristine, tarnish-free look for years.
TRIPLE VALVE MASTERY - Seamlessly switch or combine hand, head, and side showers for a personalized spa-like experience.
SAFETY FIRST THERMOSTAT - GROHE SafeStop prevents scalding by capping temperature at a family-friendly 100°F (38°C).
CUSTOMIZABLE CONTROL BUTTONS - Intuitive push-button icons let you tailor your shower setup with ease and style.
EFFORTLESS INSTALLATION USE - Slim profile with Grohe QuickFix system and EasyLogic markings for a sleek, user-friendly upgrade.

The GROHE 29138000 Grohtherm Triple-Function Shower Thermostatic Valve Trim Kit in StarLight Chrome offers three versatile valves for mixing and matching spray patterns across hand, head, and side showers. Featuring GROHE SafeStop technology to prevent scalding, durable metal construction with a tarnish-resistant finish, and customizable push-button controls, this wall-mounted thermostatic trim kit combines cutting-edge functionality with minimalist design. Ideal for modern bathrooms seeking a seamless, safe, and luxurious shower experience.

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Manufacturer	Grohe
Part number	29138000
Item Weight	1.61 Kilograms
Product Dimensions	4.29 x 15.8 x 15.8 cm; 1.61 kg
Item model number	29138000
Size	Without SmartBox
Color	StarLight Chrome
Style	Triple
Finish	Chrome
Material	Metal
Pattern	Round
Installation Method	Wall Mounted
Item Package Quantity	1
Number of Handles	1
Handle Material	Metal
Plug Profile	Wall Mount
Specific uses	Inside
Included components	Control Module, Installation Manual, Metal wall escutcheon, Thermostatic Trim
Batteries Included?	No
Batteries Required?	No

GROHE 29138000 Grohtherm Triple-Function Shower Thermostatic Valve Trim Kit, Starlight Chrome

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