Spec Sheet

Input:
• 12to24voltsACorDCoperation.
Relay:
•Standbycurrent:20mAwithrelaysoffcombinedwith
 40mAforeachrelayon.
• Four(4)Form“C”relaycontactsarerated
 10amp@120VAC/28VDC.
• Eachrelayoperatesindependently.
Events/Programming:
• Momentaryand/orLatchingEvents.
• 254individuallyprogrammeddaily/weeklyevents.
• Blockprogrammingcapacitycanaccommodatea 
totalof1778eventsperweek.
• 254programmableHolidayevents.
Features:
• EEPrommemoryprotectsagainstlossof
 programmingduetopowerfailure.
• Clocksynchronization60Hz(ACoperation).
• Accuratecrystalcontrolledclock(DCoperation).
Features (cont’d):
• “Firstmanin”option.
• StandardorDaylightSavingsTimesettings.
• Automaticcompensationforleapyear.
Battery Backup:
• Built-inchargerfor12VDCsealedleadacidorgel
 typebatteries(Max.chargecurrent300mA).
• Lithiumbatterybackupmaintainsclock.
 OrderAltronixpart#LB2032.
Display:
• AlphanumericLCDdisplaysimplifiesprogramming.
Electrical:
• Operatingtemperature:---20ºCto49ºCambient.
Mechanical:
• BoardDimensions(LxWxHapprox.):
 7”(177.8mm)x5.5”(139.7mm)x1.2”(30.48mm)
• Productweight(approx.):0.3lbs.(0.13kg).
• Shippingweight(approx.):0.5lbs.(0.23kg).
AT4Bisanextremelyversatile24Hour365DayEventTimersdesignedtosupporta
widerangeofapplications.Suchapplicationsinclude:HomeandBuildingAutomation,
Security,AccessControl,LightingControl,Etc.
AT4B Annual Event Timer
Rev.DSAT4B_11212012
Overview
Specifications
AT4B