Now available with new Cree XP-G3 s5 LEDs providing minimum of 172 lumen/watt @85degC 

Now available with new Cree XP-G3 s5 LEDs providing minimum of 172 lumen/watt @85degC 

CustomDUO modules

Gecko Spot v3 Specification 

  • Will work with any original pre 2018 Petzl Duo

  • 310 lumen (700mA) light output, with thermal regulation * if over temperature

  • Latest high power Cree XP-G3 s5 5000k LED , providing minimum of 172 lumen/watt

  • Reflector provides smooth far reaching beam 

  • Easy push fitting, replaces halogen bulb and discarding original Petzl Duo reflector 
  • No power drain when lamp switched off, with batteries connected
  • Works with Gecko Side module or Petzl Modu'led 5-14 LEDs 
  • Single power setting 
  • Simple on / off operation
  • Ideal, low cost complement to Gecko Side module or Petzl modu'led14 
  • 6.0 volt maximum input (4x AA batteries)


Gecko Spot modules offer an effective upgrade to the standard Petzl Duo, largely because the original halogen bulb reflector combination (or LED replacement bulbs) are ineffective. 


Single LED spot module, fitted in halogen position replacing original Petzl reflector. Reflector provides a far reaching beam. Ideal for checking a deep pitch or high aven. Can be used in conjunction with the 14 LED Petzl Modu'led or with Gecko Side Modules.


No longer available




* Gecko Spot module incorporates thermal protection. Current control circuit will self regulate if module reaches threshold temperature, reducing to 350mA (170 lumen) output with sustained operation. For good battery and thermal management we suggest only using Gecko Spot as an intermittent spotting tool, complemented by a Customduo 'Gecko Side' module.


The latest version of the Gecko Spot module, the v3, uses an innovative 3 pin arrangment to connect into the Duo lamp housing via the original halogen bulb connection. See Gecko v3 Fitting Guide. The Duo has been manufactured for around 20 years and there could be manufacturing inconsistencies, that might cause fitting issues. Until we are confident that there a no such issues, this product is limited to UK sales, as we can provide customers rapid support in case of difficulty. 


Gecko Spot v2 (discontinued)



Gecko Spot v3