Listen Through Wall Microphone

This ceramic contact wall microphone is purely a spare or replacement device for use in conjunction with our Listen Through Wall Device product (RSR01).

Direct Replacement Ceramic Contact Microphone

If you already own one of our Listen Through Wall Devices, you know how crucial the contact microphone is for audio transmission. Should your original sensor become lost or damaged during field operations, this official replacement part restores your surveillance kit to full working capability.

This contact sensor is a direct, plug-and-play component. It requires no complex technical pairing or manual tuning, allowing you to resume your listen through wall operations immediately upon plugging it into your main amplifier unit.

High Sensitivity Engineering & Spring-Loaded Pin

The microphone features a specialised ceramic piezo element designed to detect micro-vibrations across solid architectural barriers. It excels at capturing acoustic activity through solid brick, concrete, plasterboard, glass, and metal structures up to 300 mm thick.

Equipped with an integrated spring-loaded center contact pin, the microphone maintains optimal, uniform pressure against uneven surfaces. This ensures maximum acoustic contact, allowing you to **listen through wall** structures with minimal signal degradation or surface distortion.

Essential Accessory – Compatibility Guidance

If you are unsure whether this component matches your current system, please contact us for expert assistance. Note that this contact microphone is an accessory and cannot function independently; it requires the main amplifier body to power and filter the audio signals.

If your setup requires a different style of microphone or amplifier, feel free to browse our full surveillance catalog for alternative equipment designed for your specific operational requirements.

Can I connect this microphone directly to an audio recorder to listen through wall barriers?

No. This contact microphone requires the dedicated high-gain amplifier base unit to power the sensor and filter the audio. If you require the complete system, please select the full Listen Through Wall Device instead.

I already own a listen through wall unit. How can I confirm this replacement microphone will fit?

If you purchased your system from Spy Equipment UK, this is the direct replacement sensor for the RSR01 model. If you are unsure, please contact us with details or a photo of your host unit so we can verify compatibility.

Does this replacement contact microphone require any technical setup or pairing?

No. It is a completely plug-and-play component. Simply plug the 3.5mm connector into your existing listen through wall amplifier, and it will work instantly with no calibration required.

What should I do if the spring-loaded contact pin becomes stiff or dirty?

The center pin must move freely to maintain flush contact with uneven surfaces. Gently wipe the sensor head with a dry microfibre cloth to remove dust or adhesive residue after use. Do not submerge it in liquids.

How long is the connection lead attached to this replacement microphone?

The microphone comes with a durable 70 cm (approx. 2.3 feet) cable, giving you plenty of slack to position the contact sensor on a wall or ceiling while holding the main amplifier comfortably.

Does this replacement part include the magnetic mounting base?

Yes. The sensor casing includes the internal magnetic ring, allowing you to instantly mount the microphone onto steel frames, metal partition studs, or pipework without extra tools.

• This item is purely a spare part. You must already own the main amplifier unit of our Listen Through Wall Device (RSR01) for this microphone to function.
• This microphone is engineered exclusively for our RSR01 amplifier. It is not designed to connect directly to standard digital voice recorders or third-party equipment.
• The 70cm connection wire houses fine acoustic leads. Avoiding sharp bends, tight coiling, or excessive pulling will prevent internal wire fractures and extend its operational life.
• If you are uncertain whether this replacement part matches your current listening unit, please contact Spy Equipment UK prior to ordering for technical verification.

• Serves as an official plug-and-play spare or replacement contact microphone for the RSR01 listen through wall amplifier.
• Translates subtle structural surface vibrations caused by room voices into clear, readable audio signals.
• Features a retractable contact head that maintains firm, flush contact against uneven brick, plaster, or stone surfaces.
• Engineered to pick up acoustic activity through solid barriers up to 300 mm (12 inches) thick, including walls, ceilings, and windows.
• Includes a durable 70 cm lead that provides ample reach for positioning the sensor while keeping the main amplifier accessible.
• Features a standard audio connector that interfaces instantly with the main amplifier without needing calibration.

• Product Type: Replacement Ceramic Contact Microphone (Accessory Part)
• Compatible Main Device: RSR01 Listen Through Wall Device Amplifier
• Sensor Element: High-sensitivity piezo ceramic contact head
• Contact Mechanism: Spring-loaded retractable center pin
• Barrier Thickness Range: Up to 300 mm (12 inches)
• Cable Length: Approximately 70 cm (700 mm)
• Connector Type: Dedicated AV / Aux audio jack plug
• Operating Power: Drawn directly from the host amplifier unit

• Replacement Ceramic Contact Microphone (70 cm Cable attached)