Given that it is firing visco purely from a hot wire I would very much doubt that you need a relay to fire an e-match with it - it should source enough current for e-matches and Estes igiters I would think.
From the ad the connectors look to be industry standard IDC ribbon connectors so I would guess the whole rig is pretty good quality. The clips can probably be re-worked or at least the ribbon re-used as a tail to another igniter.
Pity the range is only 15m - given that at the price of clips it will be most useful on larger cat3 fireworks. I was thinking of getting one to fire my finale sequence to allow reasonably close timing between the fireworks and not having to spread them out too much.
i believe you have mistaken the range its not 15m its 25m with the Launch Kontrol system
- Set of fireworks with a remote control at a distance of up to 25 metres
- Launch module stores only one remote ID at a time, no risk of other remotes setting fireworks off
- Huge random code library, use many systems in one environment
- Launch up to 5 fireworks in sequence per module
- 12 second safety time from when the module is turned on
- Module uses 3 x AA batteries (supplied) and remote CR2025 (supplied)
- Pack contains remote transmitter, module receiver and 3 x 5-way E-Clips
- Replacement launch E-clips available (A56HJ)