Hi Guys ,Just a bit of info about the SLU ,First the Transmiters ,I have had Mine working with Spektrum DX4, Dx5E, DX6 DX6I And LP5DSM.They all work with the SLU,But you do have to Program some of them to do so DX6 needs to have the sticks reset (if the throttle is on the left stick normaly)and you wish to use this for functions (same setup as Heng Long for instance)you have to reset the stick for full range ,If you dont it wont fire the gun when moved up.It all depends what the radio is set for ,some standard setups say for helicopter mix channels so this has to be reset.


   So if you are using radios normaly set as standard for aircraft you may have to reset them to a neutral state .Check you manuals ,playing with the radio at the same time is the best way to find out.Once you have full range of movement you will have to reset the SLU. 

   Other problems if you are getting a red light on the ESC have you conected the wires correctly between the SLU and ESC Dont forget the 2 qwires that conect to the switch.
   Recoil units I have only used standard Heng Long recoil units but have found it best tomove the microswitch to the front it gives a better flash bang recoil timing,using the standard contacts at the back ,it moves then flashes then bang,also it somtimes recoils twice.



  regards pete