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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🔗 Connect Effortlessly, Communicate Clearly!

EASY INSTALLATION - Get started in minutes—just plug it in and switch it on!
CRYSTAL CLEAR SOUND - Enjoy high-quality audio with advanced noise reduction for natural conversations.
VERSATILE USE CASES - Perfect for banks, hospitals, schools, and more—connect with confidence!
SEAMLESS COMMUNICATION - Experience effortless two-way voice transmission without the hassle of buttons.
CUSTOMIZABLE VOLUME CONTROL - Tailor the sound levels to your environment with independent volume settings.

The CallToU Window Speaker Intercom System is a dual-way intercommunication device designed for seamless communication through glass. It features automatic voice transmission, high power output for loud and clear sound, and strong anti-interference capabilities. With independent volume control and simple installation, it's ideal for various professional settings including banks, hospitals, and schools.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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