Customer FAQs Discover answers to the most frequently asked questions from ADT customers with the click of a button. 1. I installed a lamp module, but the lamp will not turn on. What can I do? Check to make sure the original switch – the one on the lamp or power cord – is always set to the "on" position. This way, the attached Z-Wave device can turn the lamp on and off. If the main switch has been placed in the off position, the lamp cannot be controlled by the Z-Wave device.