We’ve brought the classic CDV-700 cold war Geiger Counter right up to date with this exclusive miniature sounder module. Not only does it generate clicks through its loud built-in piezo speaker, we’ve also added a red LED flasher.

The module is powered by three readily obtainable LR44/AG13 button cells (included) and it comes with one of our exclusive 3.5mm jack adaptor plugs that fits the standard Amphenol screw-fit headphone connector used on CDV-700s, so no modifications are required. You can also use the adaptor to connect your regular headphones or PC to the CD V-700. It also comes with a Velcro fastener strip, so you can attach it securely to the top or side of your Geiger Counter, without damaging it or making any holes.

It’s a really compact design, measuring approximately 65 x 30 x 16mm and weighs only 40 grams. It’s finished in CDV yellow, with an authentic CD logo on the front. There’s an on-off switch on the side and the batteries should last several weeks or months with normal intermittent operation. 
The new V4 modules we currently have in stock are a little louder than previous models and can be clearly heard, even in a noisy environment. It has been tested on all popular CD V-700 modules, including 6A/B variants made by ENI, Victoreen, Lionel and Anton (it should work on others too but if in doubt please email us before ordering so we can check). 

The headphone adaptor is now a universal fit, but please let us know which model CDV 700 you have so we can test it before despatch.
**Although our Speaker Modules were originally designed for use with CDV-700s we have found that they can work with other popular makes and types of Geiger Counter, and plug in directly on instruments fitted with 3.5mm headphone output jack sockets (we can also supply other types of adaptor). Contact us if you are unsure but if you want to take a chance we'll happily issue a full refund if your instrument turns out to be incompatible. Simply return the module to us in its original condition. You can't say fairer than that! 

*The prices shown are for UK buyers only, and are inclusive of delivery to mainland UK addresses. Overseas buyers are very welcome but please note that local taxes and customs duties are not included and are the responsibility of the purchaser. Please contact us before ordering for any additional shipping options, which vary according to location. Please also note that this item may be prohibited or restricted in some countries.

See also:

CDV-700 Spare Parts