Wonder if anyone can help. I have a number of outdoor lights that previously worked off a one way switch (they are not PIR sensored). I wish them to operate automatically for 2 hours every evening (stay on constant for 2 hours) and also have an independant pneumatic switch that I can operate when required. Can I: Wire a electroinic timer switch and the pneumatic switch in a 2 way circuit and achieve the result I want??? Any help would be appreciated.