Electronic Microphone to fit any 700 series telephone

New Improved
    Delivery time:5-7 Days
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  • Description

Electronic Microphone to fit any 700 series GPO Telephone. Superb quality transmission. These have been made to our specification and now similar to GPO 21A in output.

New improved Transmission output.

Simply replace the old carbon model with this one. Two minute job and no special skills required. This will give perfect quality speech. This will fit any 700 series model. Below is with the optional easy locate plastic top. If bought with the sponge packing fitting is identical but using sponge to pack out.

Fit in two minutes, see pictorial fitting pictures below. Tools required are one 5 mm flat head screwdriver.



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