Home Videos JF Series – Setting the Time and Date Stamp JF Series – Setting the Time and Date Stamp Learn how to set the time and date stamp on a JF Series master station. Have more questions after the video? Contact Technical Support here. Related Videos JF Series – Wiring Door Stations and Power Supply Learn how to connect door stations and the power supply to a JF Series master station. Please help us improve our How-To Videos by answering a brief survey at: http://www.keysurvey.com/f/581400/8731/ JF Series – Adding A 2nd Door Station and Setting Call Tones This video shows how to connect a second door station and select a unique call tone for each door station.