Bisun - making a range of LED lighting systems for cavers.
Complete twin-beam caving lights and drop-in upgrades.
Bright spot beams for Duos. Dive and Photo lighting.

Current manuals

Operation guide for the Flexitwin V5 (from Summer 2016)
Operation guide for the Flexitwin V4 (from Nov 2014)
Operation guide for the later Flexitwin V3s (up to Nov 2014)
Operation guide for the Flexitwin V3 (original version)
Fitting guide for the Flexitwin V3, V4 and V5

Operation guide for the P51m
Fitting guide for a P51 headset and battery box
Fitting guide for the bare P51 unit

Fitting guide for the Solo

Operation guide for the R3
Fitting guide for the R-series

Fitting guide for the S3
There is no operation guide for the S3, since there is no need for one

Fitting guide for the X2
There is no operation guide for the X2, since there is no need for one

Old manuals

Operation guide for the Flexitwin V2
Fitting guide for the Flexitwin and Flexitwin V2
Operation guide for the old modes available on the Flexitwin V1 and V2
Operation guide for the original P51
Operation guide for the P51x
Operation guide for the P31/P32/P33
Fitting guide for P31/P32/P32/P51
Operation guide for the M3
Operation guide for the M2
Operation guide for the M1
Operation guide for the Z3
Operation guide for the B31
Operation guide for the B21
Operation guide for the B17
Fitting guide for B17/B21/B31
Operation manual for the original Mig134 unit