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I have a Caldwell ballistic Precision chronograph(*) and it's only function is for testing air rifles/pistols within the workshop. I see light related errors from time to time so I want to add some really bright LED's across the diffusers to ensure more consistent results.

Can anyone recommend some suitable LED's please?

(*) Yes I should have purchased one with the optional lighting at the time and no, I am not paying seventy quid for the optional lighting.

I imagine any IR LEDS can be used - I don't think the receivers are frequency sensitive.

https://uk.rs-online.com/web/c/displays ... s/ir-leds/

Caldwell use 36 x IR leds and 1 x normal red led in each fitting. The normal led is only there to show that power is present.