Philips Zymed holter uses patented EASI 12 lead technology to produce 12 lead results from a 5 lead holter. See why what makes the state of the art Zymed holters different from all the others. Davis Medical is an authorized distributor for Philips Zymed, we can help you find the right configuration and setup a single office or multiple remote sites. Call Davis Medical today for a demo of our Zymed holter products