What is the diameter of the speaker?

It’s small- maybe 3 inches across

I wanted to use an aux extension for the microphone what size is the aux connector?

Its not real large, about small speaker size. I don’t know the exact size

Does the outside speaker receive and transmit?

Yes. I get clear responses and our patients can hear me loud and clear also.

The system operates on a 12-volt dc correct? can you provide a standard usb plug to power unit from 12 volt battery auto setup?

It works on 110 ac which you plug into the wall. No usb, just a plug.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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CallToU Window Speaker Intercom System,Dual Way Anti-Interference Intercommunication Microphone Talk Through Glass Window,for Business,Bank,Office,Hospital,Counter,Store,Station,School and More

Product ID: 244268574

Details

Brand
CallToU
Color
Black
Compatible Devices
Personal
Connectivity Technology
Play Plug
Mounting Type
Wall Mount

🔄Automatic two-way voice transmission

🔊5W high power output

🛡️4-core shielded anti-interference wire

NT$4115

Duties & taxes included

In stock

Sold byAmazon TaiwanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔊 Elevate your workspace chatter—hear every word, miss no moment!

SEAMLESS INTEGRATION - Auxiliary 3.5mm input and recording output jack for easy connection to external devices.
PLUG PLAY SIMPLICITY - Quick installation with power indicator for instant, reliable operation.
HANDS FREE COMMUNICATION - Automatic two-way intercom without pressing any buttons—effortless and efficient.
CRYSTAL CLEAR CONVERSATIONS - High-strength aluminum foil shielding ensures interference-free, natural sound.
CUSTOMIZABLE VOLUME CONTROL - Independent internal and external volume adjustments tailored to your environment.

The CallToU WI08 Window Speaker Intercom System delivers powerful 5W output with crystal-clear, two-way voice transmission through a robust 4-core shielded cable. Designed for professional environments like banks, hospitals, and offices, it features automatic hands-free communication, independent volume controls, and easy plug-and-play installation with recording capabilities, ensuring seamless, interference-free conversations across glass barriers.

Specifications

ASIN	B08LY9ZK5P
Antenna Location	Video Conference, Voice Recording
Audio Input	Auxiliary (3.5mm)
Best Sellers Rank	#216 in Home Security Systems
Brand	CallToU
Color	Black
Compatible Devices	Personal Computer, Speaker
Connectivity Technology	Play,Plug
Connector Type	Aux
Customer Reviews	4.2 4.2 out of 5 stars (148)
Enclosure Material	Metal
Frequency Response	10 hertz
Included Components	Double Sided Tape, Power Adapter
Item Weight	0.55 kg
Manufacturer	CallToU
Mfr Part Number	WI08
Model Number	WI08
Mounting Type	Wall Mount, Pole Mount
Number of Channels	2
Output Wattage	5 watts
Power Source	dc

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