If the credit does fall below the 600 threshold then we ask the client for either a up front equipment down payment and or a installation charge. This is for our companies protection of our investment with the client by providing him or her with thousand of dollars worth of equipment in order to protect their home or business. These guidelines are used for all home/business alarm security companies nation wide. We pride ourselves as being one of the top installers for our parent company Monitronics and being able to help almost every homeowner/business owner secure what matters most to them. I hope I answered your question and gave you a little bit of information about how the home security alarm industry works. Thomas DSecurity Solutions Inc.