The alligator clips are freaking genius

Always transmit with antenna fully extended. I have heard some losing transmitter range.

Do you know how I can purchase 3m30s type fireworks?

Where did you get the test LEDs? I am looking yo make some but if price is right, might buy

Can you only use the magic effect modules with this unit?

Does it state anywhere if it has encryption? I know it uses 433Mhz like loads of other wireless devices. To protect yourself and your company I would try some 433Mhz alarm key fobs (the ones with the ABCD buttons or any 433Mhz remotes you can find) if you can program the module with one of those then it may not have encryption. If it doesn't then a car or cheapo burglar alarm device or keyfob could trigger a modules fire output, a very scary thought if your using salutes or mortars !!! In fact any firework could cause burns ect. I would get written confirmation from the manufacturer that it does have encryption for your own safety and your staffs.

How much $$ was it??