... J2 or J3)6, Recording Time: 20 Second, telephone number and Voice recording will not be lost even power ... 7 digit display: it will show you the number when you are putting.4,E4 LED indicator: ... E2,E3,E4,indictor all will on8, connect to telephone line9,Connect to DC12V, Orange color cable (+) Possitive ... 6-digit password When used for voice automatically telephone system can be used as time-out functions ...