Is the input ok for 12v? The pictures say 6-9v, the description says 6-12v?

I recently ordered some of these so I just checked. The board itself says "DC in, 7-12 volts". Please keep in mind that some fully charged 12 volt batteries can produce a voltage of 13+ volts. I've not tested so I cannot say for sure. If you are regulated @ 12 volts you should be fine.

Are these good for testing guitar pedal circuits?

These are good for any low current application where the requirements are 3.3V - 5V input. These allow a 9V battery to be used to supply the proper input power to your circuit. Hopefully this helps.

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3.3V 5V MB102 Solderless Breadboard Power Supply Module with 9V Battery Clip Power Cable 2.1x 5.5mm Male DC Jack Plug for Arduino (Pack of 3)

3.3V 5V MB102 Solderless Breadboard Power Supply Module with 9V Battery Clip Power Cable 2.1x 5.5mm Male DC Jack Plug for Arduino (Pack of 3)

Product ID: 238843645

Details

Brand
ALAMSCN
CPU Model
Unknown
Connectivity Technology
USB
Included Components
3 x 5 V 3.3 V
Model Name
AL12413

⚡Dual 3.3V & 5V output

💡Power-on LED indicator

🔋9V battery snap included

VT4521

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power your prototypes like a pro—because your ideas deserve the best voltage!

COMPACT PORTABLE TRIO - Pack of 3 modules with 9V battery clips ensures you’re always equipped for on-the-go innovation.
PLUG PLAY POWER BOOST - Instantly energize your breadboard with a simple plug-in design—no soldering required.
SAFE RELIABLE CURRENT - Supports up to 700mA output current, perfect for prototyping without risking your components.
DUAL VOLTAGE FLEXIBILITY - Switch effortlessly between 3.3V and 5V rails to power diverse Arduino and microcontroller projects.
VISUAL POWER CONFIRMATION - Green LED indicator keeps you confidently informed that your circuit is powered and ready.

The ALAMSCN MB102 Power Supply Module is a compact, solderless breadboard accessory delivering regulated 3.3V and 5V outputs with up to 700mA current. Featuring a green LED power indicator, an ON/OFF switch, and a 9V battery snap cable, it plugs directly into MB102 breadboards for seamless Arduino and microcontroller prototyping. Sold in packs of three, it’s designed for reliable, flexible power delivery within a 6.5V to 12V input range.

Specifications

ASIN	B08JYPMCZY
Best Sellers Rank	#194 in Single Board Computers (Computers & Accessories)
Brand	ALAMSCN
Built-In Media	3 x 5 V 3.3 V Breadboard Power Supply Module, 3 x 9V Battery Snap Clip Power Cable
CPU Model	Unknown
Compatible Devices	MB102 breadboard
Connectivity Technology	USB
Customer Reviews	4.6 4.6 out of 5 stars (190)
Item Dimensions L x W x H	2.09"L x 1.38"W x 0.75"H
Item Weight	20 g
Manufacturer	ALAMSCN
Mfr Part Number	AL12413
Model Name	AL12413
Model Number	AL12413
Processor Brand	ARM
Processor Count	1
RAM Memory Technology	LPDDR4
UPC	701715442122
Warranty Description	3 months

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