We will be closed 15th Aug 2022 - 25th Aug 2022

We are shipping to the EU as normal.  We generally post the next working day. However, delivery within the EU is slow at the moment!  Sorry, this is beyond our control, and thanks for your patience. Import charges may apply to orders delivered outside of the UK.  


No deliveries to Russia


The Online Shop allows payment with most debit and credit cards, without the requirement for a Paypal account. Add product to cart and option is offered at checkout. 


International orders welcome. For more details please see Delivery 

CustomDUO Shop

CustomPITLAMP Modules


LED upgrades for Oldham / CEAG mining lamp conversions

CustomPITLAMP 2-tone

Latest version of our effective and stylish LED conversion modules for mining lamps. Historically popular solution with cavers, converting Oldham and CEAG headsets into caving lights. Compatible with Speleo technics FX3 and headlite lamps. New simple format with 3 light settings, 170 lumen flood, 440 lumen focussed spot and 25 lumen low level.






CustomDUO Shop 

Please note that we are a small manufacturing business. Officially we work Mon-Thurs (excluding public holidays). If closed for holidays etc we will provide notice on CustomDUO calendar.

We aim to despatch CustomDUO stock products within two working days, and generally the next working day. We make every effort to keep our on-line stock availability right up to date (and generally don't get caught napping). When placing an order, please ensure that your delivery details are correct, and also that your email address is current, so that we can keep you informed on order progress.


Before purchasing any Customduo product please ensure that you have read and accept the terms

Oldham / Petzl Battery Box based caving lamps

Intermittant stock based on availability of reclaimed parts (Oldhams and Mk1 Petzl Zoom boxes). Rebuilt with new more appropriate cable. Ready for LED retrofit, or we can of course supply a CustomPITLAMP module. Read more about this classic cavers solution, and how to build you own (saving us the trouble).



CustomPITLAMP LED Module
CustomPITLAMP with Petzl Box